About

Jimmy Johannes, MD, finds his career in medicine to be uniquely interesting and challenging and considers it a privilege to be able to engage with his community on such a personal level. He enjoys the challenges of helping others maintain health, diagnosing and treating disease, and reducing suffering by contributing to and applying the latest in biomedical science.

Dr. Johannes is board certified in Internal Medicine. He received his medical education from the School of Medicine at the University of California, Irvine. Following this, he completed his training with a residency at Cedars-Sinai Medical Center and the VA Greater Los Angeles Healthcare System and a fellowship at UCLA’s David Geffen School of Medicine. Specializing in pulmonary and critical care, he is particularly interested in pulmonary hypertension and interstitial lung diseases.

Additionally, Dr. Johannes has certification in Basic Critical Care Ultrasound which he received from the Division of Pulmonary and Critical Care Medicine at UCLA Medical Center. He is a member of the American College of Chest Physicians, the American College of Physicians, and the American Thoracic Society.

When not practicing medicine, Dr. Johannes enjoys spending time with his family and friends, going to the farmer’s market, running around town or by the beach, and eating a good bowl of pho.

*As a specialist, Dr. Johannes may not be selected as a primary care physician.

Languages

English

Provider Specialty

Pulmonary Disease, Critical Care Medicine, Pulmonology

Education

Medical School

UCI School of Medicine

2010

Internship/Residency - Internal Medicine

Cedars-Sinai Medical Center

2013

Fellowship Program - Pulmonary Disease

UCLA Medical Center

2016

Locations & Affiliations

Locations

Research

Trial Number: 339-23

Condition: Cystic Fibrosis

Conducted at: Long Beach Medical Center

Participant Age Range: 18 years to 65 years

Participant Gender: Any

Enrolling Participants: No

Trial Number: 303-22

Condition: Cystic Fibrosis

Conducted at: Miller Children’s & Women’s Hospital, Long Beach Medical Center

Participant Age Range: 6 years and older

Participant Gender: Any

Enrolling Participants: Yes

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
(276 Ratings)
Jun 10, 2026
Pamela B.
Dr. Jimmy Johannes is the best Dr I have ever seen in my life! He was so thorough in his consultation he spent 1 1/2 hrs going over all of tests and scans and came up with a plan!! I waited 6 months for my appt just to see him as reviews are great! Also is very experienced and thoughtul!
Jun 10, 2026
Paul P.
Jun 10, 2026
Joanne L.
Friendly efficient staff.
Jun 9, 2026
Pamela B.
Dr. Jimmy Johannes is the best Dr I have ever seen in my life! He was so thorough in his consultation he spent 1 1/2 hrs going over all of tests and scans and came up with a plan!! I waited 6 months for my appt just to see him as reviewd are great!
May 27, 2026
Deborah T.
May 20, 2026
Dennis D.
Dr. Johannes is very professional, he is fast but very knowledgeable and thorough. He puts you at ease and makes sure he understands what your needs are in order to prescribe the right medication.
May 19, 2026
Linda L.
He is very knowledgeable and thorough.
May 16, 2026
David K.
May 15, 2026
Carol A.
I think he is a good doctor who cares about his patients.
May 15, 2026
Dena V.
He’s clearly a 5 star, kind, understanding and took as much time to help me.

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