About

Dr. John W. Wang, who specializes in internal medicine, has relocated his successful Southern California practice to Fountain Valley.

Dr. Wang is board certified in internal medicine. He received his M.D. degree from the University of Texas, San Antonio after graduating with honors from the California Institute of Technology.

As a primary care physician (PCP), Dr. Wang is your personal physician, generally the first person you see for a regular physical exam or specific health problem. He will know all about your medical history, changes that have occurred over time, and your ongoing health and wellness.

Dr. Wang will recommend an individual, customized treatment plan for you to begin feeling your best. He will refer you to specialists as needed and will track and monitor your specialty care as it relates to you as a whole person. Our patients enjoy service in a clean and stylishly modern office setting. Consultations are completely confidential and done in a comfortable and friendly manner.

Languages

English

Provider Specialty

Internal Medicine, Primary Care

Areas of Care

Education

Medical School

University of Texas Medical School at San Antonio

1999

Internship/Residency - Internal Medicine

Kern County Medical Center - UCLA

2002

Locations & Affiliations

Locations

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

4.8 out of 5
(500 Ratings)
Mar 7, 2026
Mark A.
Dr Wang and his staff are wonderful
Mar 6, 2026
Luiz O.
Pleasant, courteous, professional. Great provider for me.
Mar 5, 2026
Charles L.
Mar 4, 2026
Anita P.
Very nice and professional man and explains to me what medicine is good for me. Thank you for taking the time to take a new patient in. I give this Doctor John Wang a 10 stars.
Feb 27, 2026
David T.
Dr. Wang was very prompt and was able to see me on almost a moments notice. His prescriptions made a very immediate improvment for how I was feeling.
Feb 24, 2026
Lisa H.
Feb 19, 2026
Matthew F.
Dr. Wang is a great Doctor to help you with all your medical needs. I have been seeing him for years now and he always has a plan., and cares about getting you back to feeling the normal way you should be. I always enjoy not only the staff who are so great and caring but with him as well. Thank You for all the happiness when I'm not feeling my best and getting me back on track.
Feb 19, 2026
Allen B.
Feb 19, 2026
Carlos C.
Dr. Wang took the time to listen and understand my concerns and took swift action to order the pertinent exams and lab work.Very kind and professional.
Feb 19, 2026
Chau N.
I was very pleased that he arrived on time for the patient. He explained things clearly and listened to the patient.

Source: Reviews are aggregated from third-party review sites such as Facebook, Google, HealthGrades, RepuGen, Vitals, WebMD, and Yelp.