About
Dr. Sy was glad to return home to Orange County for his internship and residency program at UCI Medical Center. During his residency, he was a Chief Resident in internal medicine overseeing newer residents' training. Additionally, Dr. Sy also completed a three year post graduate fellowship in Gastroenterology at Kaiser Hospital in Los Angeles.
Originally, Dr. Sy thought he would follow his "family of scientists" into a laboratory research field, but after working in a lab for a while, he found that clinical work involving patient contact better suited him.
I chose Gastroenterology because I enjoy the opportunity to perform procedures and still get to know my patients over a period of time. I know it sounds cliche, but I really do enjoy caring for patients. I like to see people get better!
Dr. Sy is board certified in gastroenterology.
Dr. Sy has volunteered his time and skills on numerous occasions including New Orleans Hurricane Katrina post hurricane Relief. In addition to volunteering, he likes to play and/or watch basketball and tennis, and spend time with family, friends, and his dog, Milo.
As a specialist, Dr. Sy may not be selected as a primary care physician. Accepts patients age 18 and over.
Languages
English
Provider Specialty
Gastroenterology
Areas of Care
Education
Medical School
Feinberg School of Medicine/Northwestern University
2003
Internship Program - Internal Medicine
University of California - Irvine Medical Center
2004
Residency Program - Internal Medicine
University of California - Irvine Medical Center
2007
Fellowship Program - Gastroenterology
Kaiser Foundation Hospitals
2010
Locations & Affiliations
Locations
MemorialCare Medical Group - Laguna Hills
26538 Moulton Parkway
Suite 38E
Laguna Hills, CA
Office: 877-696-3622
Affiliations
Insurance
Please consult your health care provider or health plan for the most accurate information about your health plan’s coverage of a particular health care service offered at a MemorialCare facility. Learn more about our Accepted Health Plans.
Patient Reviews
4.9 out of 5
(475 Ratings)
(475 Ratings)
Feb 5, 2026
Jeff P.
Feb 5, 2026
Sylvie A.
Feb 3, 2026
Nancy B.
great communication style??
Jan 28, 2026
Maria M.
It is always a pleasure to see Dr. Sy. I feel like I’m heard and that he really truly cares about his patients. I have not seen him in 8 years but he made me feel like I just saw him recently. He knows the history of treatment and procedures done before he walks in the door. Thank you, Dr SY. God bless!
Jan 27, 2026
Anny B.
Simple…….. he's a Good Doctor
Jan 27, 2026
Laureen T.
Jan 16, 2026
Petra S.
Jan 15, 2026
Anonymous
Great DoctorDr. Sy listens and is friendly, knowledgeable and efficient.
Jan 15, 2026
Nancy W.
I had a consultation with Dr. Sy
He had already looked at my chart because I sent them a week before all of my medical information
He was exceptional very thorough very clear
went into great detail my Medical situation.
Spent he spent at least 25 minutes with me.
I did not feel rushed, and I am thoroughly happy with this experience.
Jan 14, 2026
Carlos M.
Jan 10, 2026
Gary K.
Jan 8, 2026
Tiara S.
Jan 3, 2026
Norma L.
Answered all my questions and was very clear and honest
Dec 27, 2025
Anonymous
Review for Dr. Theodore SyDr. Sy listens attentively and he never makes you feel rushed. He cares about what his patients have to say about their health and how they are feeling.
Dec 26, 2025
Debra H.
Dr. Sy listens attentively and he never makes you feel rushed. He cares about what his patients have to say about their health and how they are feeling.
Dec 25, 2025
William E.
Dr. Sy is very professional and thorough. I enjoyed our visit and I feel totally confident working with Dr.Sy
Dec 25, 2025
William E.
Dec 23, 2025
Erin K.
Dr. Sy was attentive, he listened, he explained his recommendations clearly and they made sense. I felt taken care if.
Dec 23, 2025
Kenneth N.
Dec 10, 2025
Brandon K.
Very efficient
Dec 4, 2025
Nicole W.
Dec 3, 2025
Phuong N.
Professional care?
Dec 2, 2025
Erin K.
Saw me early, let me share my concerns without interrupting, answered my questions with care, made suggestions that made sense
Dec 2, 2025
Marge H.
Listening skills and knowledge
Nov 15, 2025
Elham F.
He is very thorough and checks everything
Nov 8, 2025
Anonymous
Dr Took time to get me the best care I needed to solve my issue. Very thorough and Professional !
Nov 7, 2025
Brian L.
Honest helpful and thorough great experience! Nice person and Doctor
Nov 6, 2025
Louise G.
Nov 1, 2025
Maria T.
Very professional.
Oct 29, 2025
Carol M.
Thorough and listens.
Oct 28, 2025
Perry H.
Friendly and detailed in our discussion.
Oct 25, 2025
Geraldine �.
Thorough, listens, great team, professional, knowledgeable
Oct 24, 2025
Anonymous
Dr. Sy was very kind and thorough. He has a busy practice, but he was extremely patient and generous with his time.
Oct 24, 2025
Geraldine R.
Thorough, listens, great team, professional, knowledgeable
Oct 23, 2025
Shirley T.
Caring
Oct 22, 2025
Madhavan J.
Oct 21, 2025
Madhavan J.
Dr. Sy has been very thorough in explaining the issues and possible solutions. He is very careful not to prescribe medications when they could be avoided.
Oct 15, 2025
Arnold M.
He is very thorough, professional and polite!
Oct 14, 2025
Craig J.
Listening
Oct 13, 2025
Javier L.
Friendly, very professional, feels good to be under his care
Oct 13, 2025
Wilson S.
Dr Sy is a good listener and adviser.
Oct 10, 2025
Gisela S.
Dr. SY explained in easy to understand language and suggested additional steps to improve my
Specific condition.
Sep 30, 2025
Thinh N.
Very knowledgeable, professional and caring for his patients.
Sep 30, 2025
Satar K.
Awesome Doctore. In regard to parang care , well adverse.
Sep 26, 2025
Maryann E.
He is caring and very knowledgeable.
Sep 26, 2025
Mary A.
Sep 23, 2025
Jason F.
Dr Sy and all his staff were on top on everything. Answered my questions and lab in the same building. Highly recommend this facility.
Sep 13, 2025
Susan G.
Kind, did not rush, explained in a way I understood.
Sep 12, 2025
Hong S.
From the staff at the information desk to the doctor and nurses, everyone was friendly and havd a bright smile, which made me feel great.
Sep 12, 2025
Hong W.
He was friendly and explained everything slowly and clearly, making it easy to understand. Thank you.
Sep 2, 2025
Soyla G.
Very helpful, caring and understanding.
Aug 29, 2025
Mary F.
Dr Sy is concerned with my liver. He always takes extra special care of me I feel.
Aug 27, 2025
Christine P.
Dr Sy was knowledgeable, prompt, and helpful
Aug 8, 2025
Linda W.
Dr Sy has been my Dr for a very long time. He listens, answers all my questions and explains everything to me so I understand. He is a caring Dr and I would highly recommend him.
Aug 8, 2025
Linda W.
Dr Sy has been my Dr for a very long time. He listens to my concerns and answers all my questions so that I understand. He is a caring Dr and I would highly recommend him.
Aug 1, 2025
Michael C.
Dr Sy was very easy to understand and very thorough reviewing my medications and provided clear instructions on how I need to prepare for my procedure
Jul 28, 2025
Edward M.
His honesty that he didn’t think why was I scheduled when I should’ve already been scheduled to have a colonoscopy
Jul 22, 2025
Steven B.
Fast and friendly
Jul 18, 2025
Charlie E.
Dr. Sy has been treating me for years. I have to see him every year because of suspicious polyps that keep growuing back. Staff is excellent.
Jul 17, 2025
Jimmy J.
Thorough
Jul 11, 2025
Douglas K.
I highly recommend Dr. Sy. He's very thorough and never seems rushed. Great demeanor, takes time to address all questions/concerns.
Jul 8, 2025
Mercey M.
He truly takes his time and shows he cares
Jul 2, 2025
Jonathan M.
Very easy going and to the point.
Jun 27, 2025
Kirsten M.
Dr. Sy really took his time to understand my issue and was very informative.
Jun 27, 2025
John M.
Dr Sy was incredibly thorough and really took the time to investigate the symptoms presented.
Jun 27, 2025
John M.
Dr Sy was incredibly thorough and considered the symptoms in great depth.
Jun 26, 2025
Stephanie R.
On time for appointment, friendly and listens to you. Provides you all your the information needed to make an informed decision on your health
Jun 24, 2025
Carolyn A.
Thorough
Jun 20, 2025
Louis G.
Dr. Sy is very knowledgeable, and explains my condition in language that I can understand. I feel that Dr. Sy cares for me as a patient.
Jun 11, 2025
Teresa S.
Knowledgeable and personable.
Jun 7, 2025
David W.
He was prepared for the visit. He listened to my concerns and explained the possible causes. He clearly explained the next steps for my care.
Jun 4, 2025
Jeremy E.
Amazing medical care and friendly staff. Feels like a place where everybody knows your name.
May 22, 2025
Freda C.
Overall, all was great from the nurses and doctor. Great we were very happy.
May 15, 2025
Mark H.
Dr Sy was professional and answered all my questions thoroughly!
May 15, 2025
Lucille N.
He is kind, explains things and listen to your concerns
May 15, 2025
Ana G.
Dr Sy is a professional, he is very kind to explain everything and answer all my questions. He looks you at your eyes, he is very gentle.
May 13, 2025
Michael G.
Dr Sy is good about listening to your issues and suggesting options for next steps and if there’s testing needed
Apr 29, 2025
Marina R.
Dr. Sy displays broad knowlege of patient’s health issues. Always kind and very professional in answering and asking questions.
Apr 29, 2025
Valerie E.
Easy to talk to and responded well
Apr 26, 2025
Linda M.
Thorough and friendly
Apr 22, 2025
William D.
Dr Sy and staff were professional and courteous. Dr listened to my concerns and ordered appropriate tests.
Apr 22, 2025
Henry C.
Doctor Sy was focused on me at my stage in life.
This would be my last colonoscopy. Colonoscopies can possibly result in puncture of the wall of the colon and as we age this possibility is larger. He wanted me to understand that. He also knew that my colon had more bends than normal and that meant it was more difficult to clean it out completely. So, he wanted me to spend three days prior to the operation on Miralax and the last day on Ducolax in order to accomplish that. I feel confident that the preparation will allow for a very effective procedure. Thank you, Doctor Sy.
Apr 17, 2025
Gaylan H.
Apr 15, 2025
Daniel C.
Doctor Si listen to everything I had to say and was very attentive to my problems.
Apr 15, 2025
David A.
I liked his focus and direct sharing of information.
Apr 9, 2025
Patricia C.
Dr Sy is very kind. He explained everything very well. He was kind and honest about the possibilities that go along with my condition and set up the tests we discussed right away. I would recommend him to anyone needing a gastroenterologist.
Apr 8, 2025
Gary L.
Dr Sy is always able and willing to discuss your medical options and is very knowledgeable.
Apr 2, 2025
Sujata P.
Dr. Sy was very knowledgeable about the subject.
Mar 31, 2025
Gary A.
Dr Sy was friendly, attentive and unrushed. I feel confident he can help me with my symptoms.
Mar 31, 2025
Edward W.
Mar 26, 2025
Anonymous
Excellent listener— came up with plan together. Was clear about next steps. No condescension. Long wait to get in but worth it. Staff was friendly and helpful.
Mar 26, 2025
Melissa F.
Excellent listener— came up with plan together. Was clear about next steps. No condescension.
Mar 26, 2025
Paul V.
Dr took the time toexplain every detail of my problem.
Mar 25, 2025
Dorothy W.
He makes you feel better. And listens to my concerns. Been with him along time.
Mar 13, 2025
Vicki M.
Dr. Explained in detail about my condition.
He did not rush my appointment like I have experienced with so many of my doctors with Scan!!!
Mar 12, 2025
Elizabeth K.
Very thorough and caring.
Mar 11, 2025
Jon P.
Helpful feedback re my condition
Mar 7, 2025
Mark H.
Very little wait time. He was friendly, knowledgeable, and explained my options.
Mar 6, 2025
Bartholomew B.
He thoroughly explained everything to me and answered all of my questions.
Mar 6, 2025
Shirley T.
Mar 4, 2025
Adam E.
Patient, spent the time, very understanding
Mar 3, 2025
Owen H.
Understood what was needed and ease of making a appointment
Mar 3, 2025
Daniel D.
Dr. Sy is good at listening.
Feb 26, 2025
Judy S.
Feb 26, 2025
M F.
A Dr That Listens & Actually CaresVery kind back office staff, which is important to patients first impression.. Dr Sy asked me questions about the problems I have been experiencing & he actually listened to everything I said without cutting me off like so many doctors do. He continued to ask questions until he felt that I gave him enough information to figure out what is really going on. He never made me feel like he was rushing me to get to his next patient, like so many other doctors do these days. He has some ideas & after doing some more tests & trying some different meds, hopefully he will have an answer as to what is causing my bowel changes since my trip to Costa Rica last June, since no other physicians have been able to.
Feb 25, 2025
Shirley C.
Feb 25, 2025
Guillermo L.
Doctor and staff are very profesional.
Feb 25, 2025
Marcia F.
The staff was friendly & polite. Dr Sy listened to everything I had to say, he answered all my questions in terms so that I could understand him & he didn't try to rush me out the door & took his time trying to figure out what is causing my issues.
Feb 20, 2025
Mercey M.
He listens and takes his time… shows he cares..
Feb 19, 2025
yvonne g.
Terrific Doctor. Very thorough and patient. Listened to all my concerns.
Feb 19, 2025
Orbelina K.
Feb 11, 2025
John M.
His breadth and depth of knowledge. How he considers the whole person, reviews options openly and the strengths and drawbacks of each. How gracious he is. In short, everything.
Feb 10, 2025
Shelley W.
The most thorough exam ever as a consultation. Lots of questions answered, great discussion in a way I completely understood
Feb 7, 2025
Shirley V.
First, he is pleasant, very thorough and explains where I can understand. I love Dr. Sy
Feb 7, 2025
Sherrie K.
He is an awasome dr very caring and listens to u great dr
Feb 4, 2025
Brenda B.
Feb 3, 2025
Richard K.
Professional, informative, and friendly
Jan 30, 2025
Loveleen T.
Jan 27, 2025
John J.
Always nice and good service and professional help
Jan 24, 2025
Epifania T.
A video conference consultation cut costs of time going personally see a doctor.
Jan 24, 2025
Michelle W.
Jan 23, 2025
Shannon N.
1. All of the staff i interacted with were very polite and professional.
2. Dr. Sy was the first doctor in many years that I felt excited about working with. He is very knowledgeable and patient. He explained everything in a way that was simultaneously professional but understandable to me. I really liked his hand outs for the FODMAP diet.
Jan 23, 2025
Lisa B.
Dr Sy was friendly, took his time with me and listened to my concerns. Great communication. Highly recommend!
Jan 23, 2025
Michelle W.
He was on top of my situation & 15 minutes after my ultrasound he called with results & what our next steps were!!!!
Jan 19, 2025
Deb J.
Jan 18, 2025
Debra J.
Jan 18, 2025
Sharon G.
Takes the time to listen to you. Also explains everything clearly
Jan 17, 2025
Pamela A.
Jan 14, 2025
Sue Z.
I feel like Dr. Sy truly cares about my issues, takes them seriously, gives me plenty of information, and stays current on his area of expertise.
Jan 9, 2025
Yvonne F.
Dr. Sy was professional yet friendly and very thorough during my appointment.
Jan 9, 2025
Shelley W.
Very very thorough. I appreciated the doctor explaining things in a way I could easily understand. Very efficient in the next step for my treatment.
Jan 9, 2025
Vincent M.
Jan 7, 2025
Jill R.
Jan 7, 2025
Tammy L.
Dr. Sy is an excellent doctor in every way and I enjoy my experiences with him because I have complete confidence in his abilities and process
Dec 19, 2024
Madhavan J.
Dr. Sy was very thorough in going through the issues and providing solutions for tackling them. He looked through results of recent investigations and identified possible issues. Meeting with Dr. Sy improved my confidence in managing my health issues.
Dec 13, 2024
Asadollah S.
They didn’t lost my time everything goes fast and well too
Dec 12, 2024
Teri S.
Dr Sy is professional, knowledgeable and aware of my needs. He scheduled my procedure the following week, and was in communication with my surgeon as to the surgeon’s testing needs. Very kind and positive 1st visit.
Dec 12, 2024
Kenneth F.
Dr. Sy was very informative about the entire colonoscopy procedure. We had an in depth discussion about my medical history.
Dec 12, 2024
Charles Y.
Dr. Sy is very knowledgeable and comprehensive with his patient care.
Dec 11, 2024
Satar K.
His manner and caring. Knowledge
Dec 11, 2024
SATAR A.
Dec 10, 2024
Barbara S.
Dec 10, 2024
Kerry J.
Dec 9, 2024
Anonymous
Dr. Sy is very attentive!! Listened to all my concerns and provided ideas/suggestions!! I would highly recommend Dr. Sy!!
Dec 9, 2024
Elsa E.
Dr. Sy is very attentive!! Listens to all my concerns and provides ideas/suggestions!!
I would highly recommend Dr. Sy!!
Dec 5, 2024
Leslie N.
Dr. Sy gave me so much information that was helpful.
Dec 5, 2024
Scott K.
Dr. Sy is very knowledgeable and patient. He listened to me.
Dec 5, 2024
Susan O.
Dr. Sy is knowledgeable, patient and provides plenty of time for questions.
Dec 4, 2024
Theresa R.
Very patient and welcoming. Good listener. Answered all my questions. I was very happy.
Dec 3, 2024
Scott W.
Great Doctor have seen him for years
Dec 3, 2024
Sylvia B.
Dr Sy is always attentive to what you are saying. He also gives good advice. He's also very pleasant to be around.
Nov 21, 2024
M C.
Nov 21, 2024
Mehri C.
Nov 14, 2024
Mz H.
Nov 8, 2024
Penny A.
Dr Sy listened to me and treated me with respect. He was prepared for our appointment and included me in the process of deciding the next steps. I trust his recommendations.
Oct 26, 2024
Marcelina P.
Oct 19, 2024
yuri p.
Overall very positive experience. Had upper endoscopy and colonoscopy. No sore throat whatsoever. No issues after the procedure. Recovered completely very quickly. Special thanks to Dr. Sy and his team for finding the time slot so quickly.
Oct 19, 2024
Anna R.
He is absolutely the best! My daughter is under his care and he personally calls her to follow up with her results, he truly cares about his patients. He is very knowledgeable, kind and professional. Thank you Dr Sy!
Oct 9, 2024
Madeleine A.
Sep 25, 2024
Terrence L.
Sep 17, 2024
Yupin P.
Sep 12, 2024
Ryan M.
Sep 6, 2024
Haleh K.
Sep 3, 2024
bekki v.
Dr.Sy was very knowledgeable and helpful. Am very impressed with him
Aug 28, 2024
Alfonso D.
Aug 27, 2024
Lina P.
Aug 22, 2024
Donal R.
Aug 20, 2024
Margaret E.
Thorough and discussed all options.
Jul 26, 2024
Reza N.
Jul 5, 2024
Gary D.
Jul 3, 2024
Catherine H.
Dr. Sy made me feel very comfortable. He was knowledgeable and informative. I trust him and highly recommend him.
Jul 2, 2024
Sara V.
Jul 2, 2024
Padma M.
Jun 18, 2024
Judy S.
May 29, 2024
Gisela S.
May 24, 2024
Lisa M.
May 17, 2024
Satar K.
Excellent Gi Doctor , and his listening to his patients
May 16, 2024
David M.
I like Dr Sy, he’s thorough and he’s examined me in the past.
May 16, 2024
George E.
Knowledge, care, recommended actions, immediate scheduling of required procedures
May 14, 2024
Stephanie S.
May 14, 2024
Joseph M.
Great visit and feedback from Dr. Sy as always
May 14, 2024
Elaine Y.
May 14, 2024
Dennis O.
May 12, 2024
Paul H.
My experience was stress free due to the front office employees who work as Team members when scheduling appointments for Doctors and reminders.
However my Dr Sy explained the tests ordered and the prescribed medication when it arrives.
Thanks Memorial Care.
Paul H Holloway
May 8, 2024
Gayle G.
Great listener. Gave thorough explanations and went over all options in detail.
Apr 26, 2024
Gary L.
Apr 25, 2024
Celeste G.
Dr. Sy is extremely patient, kind, and clearly explains things in a way that’s easy to understand.
Apr 25, 2024
Martha C.
On time perfectly .. Great Dr. Sy..
Apr 25, 2024
Sarah W.
Apr 25, 2024
Gary L.
Dr Sy is very thorough and intelligent. He uses the time available very well and thoroughly answers any questions. He is also very thorough about the documentation of the visit.
Apr 23, 2024
Violeta R.
All the staff are nice and they attend me nice and Dr Sy was so nice to and explained to me very fluently to understand
Apr 23, 2024
Lisa B.
Very informative and took his time with me. Very professional.
Apr 19, 2024
Breanna F.
Dr. Sy was really thorough and listened to what I had to say. Definitely recommend.
Apr 18, 2024
Barbara S.
Answered all my questions in terms I understood and thoroughly. Made a recommendation based upon my medical condition which I appreciated and will follow. Calm and very personable and professional. So glad he’s my GI doctor.
Apr 18, 2024
Scott H.
Apr 16, 2024
Harold B.
Dr Sy was patient with our questions. He was very informative and explained everything very thoroughly.
Apr 16, 2024
Mithad D.
Apr 11, 2024
Jacqueline S.
Mar 20, 2024
Priti S.
Mar 19, 2024
Guillermo L.
Doctor spent time explaining my problems and recommendations. It was fast
Mar 19, 2024
Deanna B.
Dr Sy Was respectful & listened to me. Very knowledgable & offered several suggestions for my care. I would highly recommend him.
Mar 17, 2024
Emilia D.
The entire experience from the moment I walked in it was fantastic. The staff was friendly and efficient, and Dr Sy was not only knowledgeable but also took the time to address all my questions and concerns. I left the clinic feeling confident in the care I received.
Mar 15, 2024
Cathline S.
He did not brush me off if my questions didn't make sense. He listened and explained everything to me. He came up with a plan and I will follow his recommendations.
Mar 15, 2024
Mary F.
Dr Sy is very thorough he explained everything to me so that I understood
Mar 15, 2024
Mary F.
Mar 14, 2024
Susan S.
Dr. Sy was very thorough, took his time with me and was very pleasant
Mar 14, 2024
Susan S.
he was extremely thorough. He took his time with me and was very pleasant to talk to.
Mar 12, 2024
Behzad S.
He care about patient illness, and answer all the patient concern/questions.
Mar 7, 2024
Lynn S.
So personable. Gave me options. Made referral for more info
Mar 5, 2024
David R.
Mar 5, 2024
John G.
Detailed
Mar 5, 2024
Harold D.
Mar 1, 2024
Ed T.
Highly Recommended GastroenterologistThis is my first visit with Dr. Sy. The staff at his office were friendly. Throughout my visit, I didn’t feel rushed. Dr. Sy was an excellent listener and answered all of my questions thoroughly. His patience and knowledge were exceptional. I would highly recommend him to anyone seeking for a gastroenterologist.
Feb 29, 2024
Eddie T.
This is my first visit with Dr. Theodore Sy. The staff at his office were friendly. Throughout my visit, I didn’t feel rushed. Dr. Sy was an excellent listener and answered all of questions thoroughly. His patience and knowledge were exceptional.
Feb 23, 2024
Mercey M.
Dr Sy was very informative and he answered all our questions and we never felt rushed.
Feb 22, 2024
William B.
Did not rush. Lots of Questions.
Very personable. It seemed like we had known each other for years.
Feb 20, 2024
Anna C.
Dr Sy payed attention to my concerns
Feb 20, 2024
Razie S.
He is the most caring and knowledgeable doctor.
Thanks doctor Sy.
Feb 15, 2024
Wanna D.
The doctor listened, took active next steps towards concerns, and has a professional bedside manners.
Feb 15, 2024
Bruce M.
Gave me information
Feb 13, 2024
Cory S.
Competent, knowledgeable, and thorough.
Feb 13, 2024
George T.
Everything
Feb 13, 2024
Maria R.
Feb 9, 2024
Christine H.
He listens, is thorough, knowledgeable and kind.
Feb 8, 2024
Karen L.
Very knowledgeable, explained everything!
Feb 8, 2024
Linda A.
Dr.Sy is very personable. He listens carefully. He has excellent suggestions, and he initiates testing and other doctors needed in regards to completing the examination to get to the root and cause of a problem.
I am so please to have him as my Dr.
Thank you Dr. Sy.
Linda
Feb 7, 2024
Myra R.
Dr. Sai takes the time to explain what is going on with your condition, he answers questions, and I do not feel like I’m rushed to get out of the office. He’s very thorough!
Feb 7, 2024
Ryan D.
One of the best doctors I’ve had a consultation with. Very thorough and caring.
Feb 6, 2024
Linda B.
He was kind, professional and explained everything to me that I was concerned about without making me feel rushed! He’s a great doctor!
Feb 6, 2024
Ryan D.
Very informative and thorough.
Feb 5, 2024
Debbie A.
Very thorough, very kind
Feb 2, 2024
Maria B.
Thorough, personable
Feb 2, 2024
Ying Z.
Feb 1, 2024
Jeremy E.
Dr Sy is a World Class Physician and has the heart and touch of an Angel.
Feb 1, 2024
Annemarie V.
He always listens & explains everything so well.
Jan 31, 2024
Pourandokht K.
Jan 30, 2024
Jon P.
Very, very helpful for me and my many concerns.
Jan 30, 2024
Anne B.
Dr. Sy was professional, thorough and answered all my questions. I never felt rushed.
Jan 26, 2024
Jennifer P.
Knowledgeable, understanding caring and addressing all issues great Doctor
Jan 25, 2024
Martha J.
Professional, courteous, and thorough. He is concerned about my bad and now just one good blood reading for fatty liver disease. Being sent to have two procedures tests including an ultrasound sound for my liver.
Jan 25, 2024
Beth P.
Dr. Sy is thorough, asking lots of questions. He is also a patient listener and answers all of my questions.
Jan 23, 2024
Beverly W.
very thorough
Jan 23, 2024
Michael C.
Jan 22, 2024
Harshadray G.
Spent enough time with me to discuss and answer questions in detail
Jan 19, 2024
Azam S.
He is very thorough and explains everything clearly.
Jan 19, 2024
Anthony D.
Dr.sy is wonderful.very professional but a great people person as well.
Jan 17, 2024
Cindy S.
Dr Sy is very caring, well informed and intelligent. He overseas all of my health issues . Above and beyond what I’d expect.
Jan 10, 2024
Paraluman C.
Thorough easy and efficient enlightening
Jan 10, 2024
Gayle J.
Dr. Sy was very helpful! Great “bedside manner”’!
Jan 9, 2024
Cindy R.
Dr. Sy is remarkably intelligent and has a kind, compassionate manner!
Jan 4, 2024
Mehri C.
On-time and cares about the patient
Dec 24, 2023
Vivica R.
Excellent Dr. who has provided excellent care and concern.
Dec 24, 2023
Vivica R.
His Attitude, his explaining of the consultation, his explanation of what was not shared by previous Dr's., his recommended Treatment Plan and how the Plan would be carried out.
Dec 20, 2023
Darren W.
The doctor was present in the moment, listened to my concerns, and gave me such a sense of relief by being such a competent professional.
Dec 19, 2023
Susan O.
Dr Sy is very knowledgeable and patient to answer and questions.
Dec 14, 2023
Denese A.
He’s polite, caring, understanding, thorough, and doesn’t rush out. Gives a complete summary so you can digest things later.
Dec 14, 2023
Christy D.
Very patient and thorough. He took his time to explain everything.
Dec 13, 2023
Victor A.
He is a good Listener.
Dec 12, 2023
Satar K.
Dr.Sy is very passionate & well informed
Dec 12, 2023
Parymah K.
He is so professional in his field
Dec 12, 2023
Peggy C.
Dr Sy takes his time & fully explains medical issues & procedures in layman’s terms.
Dec 7, 2023
Lojie M.
Great! Very informative.
Dec 7, 2023
Patricia B.
Easy quick and knowledgeable
Dec 5, 2023
Osman C.
Very thorough and was on time with his appointment
Dec 2, 2023
Junefrey P.
Dec 1, 2023
Kimberly D.
Excellent gastro doctor. He actually explains the "whys" and/or consequences for all his recommendations and/or orders! A+++ Gastroenterologist!
Dec 1, 2023
John P.
Nov 28, 2023
Christine S.
He is friendly and knowledgeable
Nov 28, 2023
Lourdes S.
Nov 28, 2023
Dorothy W.
Dr. SY…Goes in to detail . What you should do and not do.He cares about his patients. As I get older I hope he is around for me.
Nov 28, 2023
Donny T.
Approachable, knowledgeable, and attentive physician and helpful staff.
Nov 28, 2023
christine s.
He is friendly and knowledgeable.
Nov 22, 2023
Cynthia N.
Dr. Sy
Is one of the most caring and knowledgeable Doctors I have had the privilege of being his patient. I find him to be and excellence choice for my GI problems. It has been a difficult year for me after taking Ozempic. It has made me extremely constipated, and has paralyzed my stomach and my bowels. I went into Septic Shock while on a trip visiting my family. Dr.Sy provided me with many test to help with my GI problems.
Sincerely
Cynthia N.
Nov 22, 2023
John D.
sincere,knows his job, understanding
Nov 20, 2023
Paul J.
His attentiveness, calm demeanor, thoroughness and depth of knowledge. Very likable medical professional.
Nov 20, 2023
Paul J.
Dr Sy was very attentive, thorough in his examination, calm and helpful in educating me to understand the nature of my medical problem. Very likeable demeanor..
Nov 14, 2023
Kelly M.
Nov 9, 2023
Peggy H.
Nov 9, 2023
Peywen H.
Nov 7, 2023
Carole P.
Oct 27, 2023
Salvatore P.
very professional
Oct 24, 2023
Elsa E.
Dr.Sy was very thorough and explained everything in detail! Provided a diet to follow, and ordered several tests. I would highly recommend Dr
Sy!
Oct 24, 2023
Yi T.
Communication
Oct 24, 2023
Elsa C.
Dr. Sy was very thorough and explained everything in detail! Dr. Sy provided a diet, and ordered several tests. I would highly recommend Dr. Sy!!
Oct 20, 2023
Susana H.
Kind and patient explained my medical issue in detail which was greatly appreciated…
Oct 19, 2023
Susana H.
Kind and patient explained my medical issue in detail which was greatly appreciated…
Oct 19, 2023
Don P.
Dr.Sy, he’s the best!
Oct 17, 2023
Celina B.
He is very caring and an excellent doctor.
Oct 10, 2023
Amy M.
Great demeanor, explained all my options and the pros and cons of them, made sure to ask if I have any questions or confusion over anything. Thorough yet personable.
Oct 10, 2023
Margaret E.
Thouroughness in addressing all my concerns.
Oct 6, 2023
Sarah W.
Always professional and knowledgeable! Friendly staff!
Oct 5, 2023
Lynn S.
Always listens. Orders appropriate tests
Oct 4, 2023
Haven T.
Oct 3, 2023
Arpad P.
Great listening and caring skills
Oct 3, 2023
Karen B.
Everyone was very professional, Dr Sy and his Nurses were very easy to talk to .
Oct 3, 2023
Edward B.
Front desk was great- check in nurse was terrific. Dr. Sy spent lots of time explaining my case and helping me with decisions. Adi in scheduling helped with arranging future appointments. Lab onsite and technician there was really good. Everyone there was super friendly.
Oct 3, 2023
Ed B.
Great doctor and staff at this location
Sep 29, 2023
Jamie C.
Dr. Sy is thorough, knowledgeable and compassionate.
Sep 29, 2023
Kathryn H.
Sep 26, 2023
Lori L.
Prompt, personable, good listener.
Sep 22, 2023
Christina K.
Sep 22, 2023
Karen J.
Dr Sy is the best. He listens, he reviews tests & medications. Very thorough & efficient. He has excellent bedside manner. So grateful to have him for my GI issues.
Sep 13, 2023
Annette E.
Dr.Sy
He took the time to listen to me, and also explain my condition, when you get older, that's important!
Sep 12, 2023
James T.
Dr Sy was very thorough. Ask questions. Listened carefully to answers.
Sep 7, 2023
Linda A.
Excellent Dr.
Explains everything thoroughly.
Sep 5, 2023
Maxine R.
Dr. Sy is very thorough and knowledgeable about my issues and offered me a very attainable treatment plan with printed information and guidelines for me to follow. He spoke clearly and made sure I understood everything he said, which I did. He is an excellent doctor!
Sep 5, 2023
Jamie C.
Sep 5, 2023
Thinh N.
Sep 3, 2023
Mary A.
Aug 26, 2023
John F.
As usual, Dr Sy provided a complete professional and extensive exam regarding my malady.
Aug 25, 2023
Jose M.
Aug 25, 2023
Christine D.
Aug 23, 2023
Paula H.
Very polite and efficient.
Aug 22, 2023
Thomas A.
Explained issues clearly
Aug 19, 2023
Edward H.
Good bedside manner
Aug 17, 2023
Edgardo C.
Very thorough and knowledgeable on explaining my medical history related to my consultation in regards to colonoscopy.
Aug 16, 2023
Robert D.
Dr. Sy is very personable and explains things clearly.
Aug 15, 2023
John J.
Nice and fast service
Aug 15, 2023
John M.
Very informative, friendly and caring
Aug 4, 2023
Christopher B.
His demeanor and they fact he considers all my body systems
Aug 1, 2023
Jordan G.
He is fantastic. Explained things well, set up a program with me and eased any concerns I have.
Aug 1, 2023
Redonda M.
Dr. Sy was very professional and personable.
Jul 31, 2023
Noreen P.
Jul 30, 2023
Noreen P.
Dr. Sy is very kind and listens to any concerns you may have. Takes time to speak with you not making you feel you're being rushed.
Jul 25, 2023
Terrence L.
As I explained my issues, Dr. Sy listened closely and questioned me thoroughly. Our visit went smoothly and professionally … a procedure was scheduled and I feel I am in good hands.
Jul 25, 2023
Jodi J.
Staff and Dr very attentive and thorough
Jul 25, 2023
Shima M.
I highly recommend dr SY , he is nice , knowledgeable and very patient .
Jul 21, 2023
Michelle M.
Jul 20, 2023
Linda R.
Friendly staff and RN. Dr. Sy listened to and answered all my questions. He explained things in detail. He is very professional and personable. I feel totally confident placing my health care in his hands.
Jul 19, 2023
Brian H.
Good consultation. Felt he asked many good questions and really listened.
Jul 19, 2023
Douglas M.
Through explained and answered all questions
Jul 13, 2023
Kevin M.
Jul 12, 2023
Angela B.
Doctor and nurse aid were very attentive and caring
Jul 11, 2023
Patricia H.
Professional and caring
Jul 11, 2023
Stephen J.
Everyone was so friendly and helpful. Made me feel very comfortable.
Jul 11, 2023
Elvira U.
Jul 10, 2023
Bryson S.
listens
Jul 6, 2023
Roger P.
Very professional
Jul 4, 2023
Susan D.
Dr. Sy was great. Listened to everything I related to him and answered all my questions.
Jul 2, 2023
Nadine S.
All staff are kind and patient and offer excellent care before, during and after procedures.
Jun 30, 2023
Steve S.
everything
Jun 23, 2023
Sandra G.
Jun 23, 2023
Maria Q.
Jun 22, 2023
Joseph C.
Dr Sy was very helpful, professional, and knowledgeable. It was a very nice office and I was treated very timely.
Jun 14, 2023
Jean B.
Dr. Sy made sure I am doing well. Extra care!
Jun 13, 2023
Anonymous
This is my consultation visit with Dr. Sy for a colondoscopy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear This is my first visit with Dr. Sy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication This is my first visit with Dr. Sy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication about my care, answered questions and explained in details.
Jun 13, 2023
One L.
Great, he is very professional. I know that I am in good hands .
Jun 9, 2023
Michael W.
Listens and Answers all my questions. I am at ease when speaking to him about my medical issues.
Jun 8, 2023
Razie S.
He is really a carrying doctor.
Jun 8, 2023
Vida K.
Jun 8, 2023
Dennis P.
Honest and direct with questions
Jun 6, 2023
Joseph B.
Very easy to talk to. Explained the upcoming procedure and the importance of getting regular colonoscopies based on my past tests.
Jun 3, 2023
Mary P.
May 28, 2023
May T.
Dr. Sy is very knowledgeable and explains things in detail. He is friendly and polite.
May 24, 2023
Adela C.
Dr. Sy is very professional and a care doctor .
May 23, 2023
Gabrielle P.
The staff was very friendly. Service was fast.
May 18, 2023
Jay M.
Dr Sy explained that I need some test first to determine if my procedure would be safe
May 18, 2023
Roxanne D.
Very thorough and took his time with me.
May 18, 2023
Maria C.
Dr Sy was excellent to listening all about my care and I understand his recommendations. Thanks 🙏
May 16, 2023
Daniel W.
May 12, 2023
Shohreh K.
Great, he is very professional. I know that I am in good hands .
May 12, 2023
Albert H.
Patient, kind, understanding
May 11, 2023
Keith T.
Good follow up
May 11, 2023
Wilson S.
I liked that Dr Sy is very compassionate, accommodating, speak to patients on certain level that they understood him, absolute high bedside manner and share good opinion and recommendations.
May 10, 2023
Ron H.
Dr Sy is probably the most frank,but pleasant, doctor I have ever had .He "tells it hid it is"! His years of experience really show in the way he explains the details and analysis of the results of any lab tests which may have been performed during the days/weeks before this lasted visit.
May 8, 2023
Owen H.
no waiting to see Dr. and Dr Sy answered all my questions.
May 5, 2023
Teresita I.
May 4, 2023
Jennifer N.
Dr Sy really took time with me. He asked questions and listened. I really appreciated his time.
May 2, 2023
Jyotsna B.
Very knowledgable kind and explained well
May 2, 2023
Ernest S.
Great forward looking overview of health. Explains information clearly and thorough.
May 2, 2023
David P.
Thorough. Listened to me. Asked pertinent questions
May 1, 2023
Gerald D.
Apr 28, 2023
Lydia G.
Knowledgeable about my symptoms and explained course of treatment
Apr 28, 2023
Gilberto D.
Apr 25, 2023
Rebecca A.
Dr Sy was very thorough and explained the possibilities of my condition and test needed to take in a manner that was easy to understand.
Apr 22, 2023
Douglas M.
Covered all issues and. Answered my questions in a way I understood completely.
Apr 20, 2023
Ann M.
Dr. Sy is very thorough and thoughtful. We are lucky to have him on staff!
Apr 18, 2023
Kristin D.
Apr 18, 2023
Elizabeth P.
Staff and doctor were very nice and helpful!
Apr 17, 2023
Katherine L.
Dr. Sy is professional, a good listener, explains things well.
Apr 14, 2023
Bahman S.
Knowledge, on time,
Apr 11, 2023
Ruth D.
He was attentive to what I was saying. And addressed all my issues.
Apr 11, 2023
Doreen K.
The office staff was very friendly. Dr. Sy spent time with me and explained in detail everything we discussed.
Apr 10, 2023
Paul H.
I am impressed with the genuinely professional and Happy team Players at the Irvine Memorial Care Facility., liked the 2:40 pm. appointment and I did not have to wait, Outstanding Job Well Done, thank all of these Extraordinary Memorial Care Employees,
Apr 8, 2023
Janice B.
Dr. Sy is one of the best Doctor's I've known him for years and he's one of the most concerning Doctor's with memorial care. He's the best. sincerely Janice Brown
Apr 5, 2023
Payam N.
I Had good experience.
Mar 30, 2023
Mark S.
Mar 30, 2023
Toni D.
Friendly, knowledgeable staff.
Mar 30, 2023
Patricia T.
Mar 30, 2023
Edward R.
Knowledgeable, caring, reassuring manner, pleasant and personable. A real asset to Memorial Care Medical Group
who explained things thoroughly, welcomed input and enjoyed an interactive conversation. Made my consultation an enjoyable learning experience.
Mar 27, 2023
Rose W.
Mar 26, 2023
Cynthia W.
Dr. Sy listens very knowledgeable, and compassionate
Mar 24, 2023
Jose F.
Mar 24, 2023
K L.
Mar 23, 2023
Kay L.
The information was very helpful.
Mar 22, 2023
Shailee M.
Very attentive and patiently listened and addressed all concerns with genuine concern.
Mar 22, 2023
Anonymous
This is my consultation visit with Dr. Sy for a colondoscopy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear This is my first visit with Dr. Sy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication This is my first visit with Dr. Sy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication about my care, answered questions and explained in details.
Mar 21, 2023
Anonymous
This is my consultation for a colondoscopy procedure with Dr. Sy after 10 years . Dr. Sy had reviewed my records before he discussed his concerns. I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication about my care, answered questions and explained in details.
Mar 21, 2023
Kay H.
This is my first visit with Dr. Sy after 10 years . I think Dr. Sy is a phenomenal doctor. He is very thorough, polite and courteous. He provided clear communication about my care, answered questions and explained in details .
Mar 21, 2023
Anny B.
Professional and Informative.
Mar 16, 2023
Susan B.
Mar 14, 2023
Jason W.
Very thorough.
Mar 14, 2023
Kathleen A.
Dr Sy, really takes the time to listen and I think that’s important. He always asks good questions about my health as it relates to why I see him and he keeps me on top of my tests that are so important. Thank you Dr Sy, for all you do for all your patients.
Mar 14, 2023
Christine S.
Nice and knowledgeable
Mar 14, 2023
Jessica M.
Dr. Sy is so comforting and knowledgeable. He does everything possible to figure out your issue. His nurse, Lindsay is amazing as well!
Mar 14, 2023
John J.
Always nice and friendly
Mar 11, 2023
Reesa B.
Dr. Sy is always very patient-oriented. He was familiar with the chart information. Very thorough.
Mar 9, 2023
Patric M.
Friendly, listened well, probed for other possible concerns and was thorough.
Mar 9, 2023
David C.
Nice, DR good service
Mar 8, 2023
Jessica V.
Dr. Sy was an excellent listener. He gave me good direction on how to manage my care based on my symptoms. He was informative and we both came to the best agreement on a plan of action for my diagnostic plan of action.
Mar 7, 2023
Edward W.
Knowledgeable, patient, kind and caring...
Mar 2, 2023
Ronald C.
Very professional and straight forward with our discussions.
Feb 28, 2023
Gloria D.
On time-- answered my questions- gave me a new RX.
Feb 28, 2023
Byron M.
Dr. Sy is a highly professional authority whom I trust implicitly. His insistence to follow a Hep C treatment saved my life, which I will never forget.
Feb 26, 2023
Michele D.
He was personable and informative.
Feb 24, 2023
Barbara S.
Personable and presented future options to consider.
Feb 23, 2023
Anonymous
It was great. No waiting time.
Feb 22, 2023
Ellie D.
because he cares about his patients, is a competent and smart doctor and is a great listener as well as answers and explains the questions
Feb 22, 2023
John W.
Very knowledgable and thorough; very good listener.
Feb 21, 2023
Richard C.
Dr Sy is very thorough and explained the options well.
Feb 20, 2023
Noreen V.
Very polite, caring, knowledgeable,
Feb 12, 2023
Thelma J.
Feb 11, 2023
Maria R.
Dr. Sy was thorough and explained everything until I understood. He in no way rushed.
Jan 30, 2026
Maria V.
Didn’t wait lo g. Dr Sy was informative and accommodating.
Oct 14, 2025
Craig J.
Listening
Aug 22, 2025
Teresa L.
He was thorough and answered all my questions.
Aug 6, 2025
David P.
It was fast!
Jun 16, 2025
Anny B.
Pleasant and informative
May 20, 2025
Carol A.
He listened, explained, & was thorough.
May 14, 2025
Dan M.
Morning went very well, timely, and spent a good amount of time with Dr. Si
Apr 27, 2025
Larry E.
Dr. Sy is very thorough and listens.
Mar 11, 2025
Charles S.
Understood my needs
Feb 20, 2025
Sara S.
Feb 18, 2025
Yvonne G.
He took great care, and listened to my concerns.
Feb 13, 2025
Kathleen R.
Easy to discuss health situations with. Very kind and nice office staff.
Feb 13, 2025
Huong L.
Dec 19, 2024
Tram H.
Dec 6, 2024
Rita M.
He suggested several things I can do. Gave me his suggestion for what to watch for. Food to eliminate. Interesting!
Oct 8, 2024
Madeleine A.
Aug 23, 2024
David P.
Aug 1, 2024
Cecilia C.
Jul 26, 2024
Anne F.
May 28, 2024
Manila T.
May 14, 2024
Hal J.
Everyone was so Professional friendly and helpful.
May 1, 2024
Miriam R.
Excellent
Apr 24, 2024
Michael H.
Very friendly and knowledgeable
Apr 16, 2024
Denice M.
Mar 14, 2024
Victoria B.
Very thorough explanation of procedure and very pleasant demeanor
Feb 15, 2024
Jorge M.
Jan 19, 2024
Marc J.
He is very good specialist, but often difficult if not impossible to get appointment for when you want, even with a week or two notice, although I don’t believe he is that busy to give 4-6 months appointment time.
Dec 4, 2023
Jennifer N.
Dr Sy spent almost an hour with me. He’s very kind and he listens.
Nov 28, 2023
Carlo G.
He took the time to listen and respond clearly to questions
Oct 27, 2023
Jorge M.
Asking many questions
Oct 20, 2023
Kathleen R.
Oct 18, 2023
Jackie H.
Aug 29, 2023
Kenneth L.
Aug 25, 2023
Jerry S.
Dr. Sy is knowledgeable and makes it easy to discuss health issues.
Jun 6, 2023
Howard M.
He listens to me!!
May 3, 2023
Ali G.
Mar 28, 2023
Shabnam C.
Dr. Sy spent a lot of time with me and helped me with my situation.
Mar 19, 2023
Bruce W.
His expertise.
Mar 13, 2023
Marilyn K.
Feb 24, 2023
Shirley C.
Doctor was responsive and gave concrete answers and explanations to questions. His bedside manner was professional and not aloof, nor did he talk down to his patient. He explained the basis for his treatment plan.
Feb 22, 2023
Edna A.
He took the time to answer my concerns. Very pleasant to talk to. Not rushed.
Feb 21, 2023
Teresa L.
Dr. Sy was thorough in explaining the procedures I needed.
Feb 13, 2023
Carol L.
explains things clearly and listens to patient
Jun 17, 2025
Dominique O.
Very informative while still being clear and easy to understand.
Mar 13, 2025
Cynthia D.
Very thorough and took time to discuss issues.
Jun 11, 2024
Genalyn J.
May 9, 2023
Pamela E.
Jul 9, 2025
Christine B.
Ask me again after my procedure.
Jun 26, 2023
Yong L.
be a system thinker and detail-oriented.
Nov 21, 2024
Donald G.
I had an appointment in july/August for December 17th. Received a text from his staff, that he had to cancel. They wanted to reschedule for the second week in February..This is unacceptable, 6 months to meet with the doctor, I'm in need of my infusion every 2 months
Aug 5, 2024
Jonah A.
I booked an appointment with Dr. Sy months in advance and his staff waited until the day before to call me to let me know that they decided to take another patient instead of me and that I lost my appointment.
Aug 5, 2024
Jonah A.
I booked an appointment with Dr. Sy months in advance and his staff waited until the day before to call me to let me know that they decided to take another patient instead of me and that I lost my appointment.update: I've talked to 4 different people after calling that number and everyone has been less then helpful. Then they offered me an appointment 5 additional months out after already waiting 4 months for the appointment.
Source: Reviews are aggregated from third-party review sites such as Facebook, Google, HealthGrades, RepuGen, Vitals, WebMD, and Yelp.