About

Dr. Tachibana has been with MemorialCare Independent Physicians since 2001 in which he has received awards recognizing him as a Physician of the Year in Internal Medicine in 2009 and 2013.

His field of expertise includes treatment of diabetic adults, hypertension, emphysema, heart disease, lipid disorders, thyroid disease, and diagnosis of various cancers.

Dr. Tachibana and his staff speak both English and Japanese.

Languages

English, Japanese

Provider Specialty

Internal Medicine, Primary Care

Areas of Care

Education

Medical School

University of the Philippines College of Medicine

1978

Internship Program - Internal Medicine

University of California - San Francisco - Fresno

1980

Residency Program - Internal Medicine

Loma Linda University Medical Center

1981

Locations & Affiliations

Locations

Mikio Tachibana, MD

11100 Warner Avenue

Suite 154

Fountain Valley, CA

Office: 714-966-2800

Get Directions

Mikio Tachibana, MD

4950 Barranca Pkwy.

Suite 205B

Irvine, CA

Office: 949-262-0200

Get Directions

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
(81 Ratings)
Oct 24, 2026
Aiko T.
Oct 23, 2026
Wayne W.
I have been going to Dr Tachibana for many years.Dr Tachibana and his entire staff have always there to listen and help you with problems that come up With any health issues.Doctor and Staff have always been professional,and friendly.I would recommend Dr Tachibana to anyone in your need of a good professional Dr and staff.
Oct 22, 2026
Mikiko K.
Excellent caring, service
Oct 21, 2026
Anonymous
Dr. Tachibana has been our primary care provider for over 5 years, after we returned from a few years overseas. He has referred us to specialists, to home health care agencies, and to a rehabilitation facility, all of which were excellent. His pharmaceutical knowledge is impressive. He explains the benefits of each one, or why one is not appropriate due to our conditions, history, and other medications. His office staff is very friendly and communicative, making it easy to get appointments, test results, referrals, and more.
Oct 21, 2026
Anonymous
As Good A Doctor As You Will FindDr. Tachibana has been our primary care provider for over 5 years. He shows exceptional knowledge of medications and their interactions with other medications, and always explains the reasons for choosing one over another. He has referred us to other specialists, to home health care agencies, and to a rehabilitation facility, all of which were excellent. His office staff is friendly and communicative, and make it easy to get appointments and test results.
Oct 20, 2026
Arthur A.
Oct 20, 2026
Diane T.
Oct 20, 2026
Patchanee M.
He has been our primary care physician for the past 5 years. He has a deep knowledge of medications, their effectiveness, and compatibility with other medications. He has referred us to excellent specialists, home health care, and rehabilitation care.
Oct 19, 2026
Ricky M.
We satisfied his support for us.
Oct 17, 2026
Junko T.
View More

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