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Gregory Harmon, M.D.


Torrance Gastroenterology

20911 Earl St., Ste. 220

Torrance, CA 90503

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Accepting New Patients

Dr. Gregory Harmon was raised in the suburbs of Los Angeles. He studied Molecular Biology and History at the University of California San Diego, graduating with honors and election to Phi Beta Kappa. He studied medicine in Chicago and returned to UCSD for specialty training in Gastroenterology. He has practiced in Southern California since 2005. Dr. Harmon is an Assistant Clinical Professor at the UCLA School of Medicine, where he directed the celiac disease and gastrointestinal nutrition programs. He has provided continuing medical education lectures at numerous Southern California hospitals. His research experience includes working with the RAND Corporation to study health care quality and scientific laboratories to understand the molecules of inflammation. His publications appear in top-tier scientific journals. Dr. Harmon’s clinical interests include colonoscopy, inflammatory bowel disease, and nutrition. His goal is to help each patient achieve optimal personalized health.

Education & Experience


Medical School

University of Chicago, Pritzker School of Medicine


Northwestern University School of Medicine, McGaw


Internal Medicine, Northwestern University School of Medicine, McGaw


Post Graduate Gastroenterology and Hepatology,
University of California, San Diego

Insurances Accepted


Torrance Gastroenterology

(310) 214-7236

20911 Earl St., Ste. 220

Torrance, CA 90503

Get Directions


Get Directions