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Joseph E. Barrera, MD
Practice accepting new patients.

Joseph E. Barrera, MD

(949) 542-8004
Primary Specialties
  • Endocrinology, Diabetes & Metabolism
    (Board Certified)
Medical Groups & Affiliations
  • Mission Heritage Medical Group
  • Mission Hospital Affiliated Physicians

Primary Office

26800 Crown Valley Pkwy.
Suite 230
Mission Viejo, CA 92691
(949) 542-8004
(949) 364-3682
Mon - Fri: 8 a.m. - 4:30 p.m.
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4.9 out of 5 (184 Ratings | 33 Comments)


Dr Barrera is the best
*Dr. Barrera is awesome. I have recommended him many times.
In meeting the provider is very good. KEY problem is LACK OF continuity - if I have a follow up question on concern, it is IMPOSSIBLE to reach him. NO RESPONSE.
*Dr. Barra. He is a great doctor, it has been one of the best I ever had.
Dr. Barrara is probably one of the best doctors I have ever seen. I never feel rushed and feel as though he is really listening to my concerns. doesn't ever feel as if he is on a time schedule, although I know he probably is. I would highly recommend him to anyone. what I really appreciate is that when he is with me he doesn't seem to be thinking of his next appointment , he is present the entire time!!
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Physician Bio

Dr. Barrera's interests include intensive management of diabetes, hypertension and lipid disorders.

He is also involved in the management of prediabetic conditions including metabolic syndrome and polycystic ovarian syndrome.

He has been the principal investigator for numerous clinical trials involving the development of new therapies for diabetes, blood pressure and thyroid cancer. He has lectured extensively to physician colleagues and patient groups in the area of cardiovascular risk management and preventive endocrinology.

Prior to joining Mission Internal Medical Group, Dr. Barrera was the Medical Director of the Diabetes Program at Alta Bates Hospital in Berkeley, California and a team physician for the Oakland Athletics baseball team.

He was also a physician consultant for the KRON and KTVU/Fox news stations in the San Francisco Bay Area.


American Board of Internal Medicine
Board Certified Endocrinology, 1999
American Assosciation of Clinical Endocrinologists
Endocrine Society

Areas of Interest