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Evan Mosier,

Gastroenterologist

Biography photo
Location
Duarte Comprehensive Cancer Center
1500 East Duarte Road
Duarte, CA 91010
Education
Medical school:
Degree
  • 2015, M.D., University of Hawaii John A. Burns School of Medicine, Honolulu, HI
Residency
  • 2015-2018, Internal Medicine, LAC+USC Medical Center, Los Angeles, CA
Fellowship
  • 2018-2021, Gastroenterology, Loma Linda University, San Bernardino, CA
Professional Experience
  • 2025-present, Assistant Clinical Professor, Department of Medicine, City of Hope, Duarte, CA
  • 2021-2024, General Gastroenterologist, Kaiser Permanente Southern California, San Bernardino, CA
Academic Appointments
  • Assistant Clinical Professor, Department of Medicine
About Me

Evan Mosier, M.D., is an assistant professor in the Department of Medicine at City of Hope® Cancer Center Duarte, specializing in gastroenterology. Committed to the prevention and early diagnosis of gastrointestinal cancers, Dr. Mosier takes a compassionate, person-centered approach to working with patients undergoing both screening and treatment. He believes strongly that patients must play an active role in their treatment and have the support they need to live an active and healthy life.

Dr. Mosier earned his medical degree from the University of Hawaii John A. Burns School of Medicine in Honolulu, then completed an internal medicine residency at LAC+USC Medical Center (now Los Angeles General Medical Center) and a fellowship in gastroenterology at Loma Linda University in San Bernardino, California. He also underwent additional training during his fellowship in gastrointestinal motility, focusing on advancements in diagnosing and treating motility issues such as swallowing and gut-transit disorders. Dr. Mosier also has additional skill sets in evaluating Manometry, pH testing, and EndoFlip/EsoFlip. He is also an active member in the American Neurogastroenterology and Motility Society (ANMS).

A physician-scholar, Dr. Mosier has published multiple articles in peer-reviewed journals and was named “Fellow of the Year” during his fellowship at Loma Linda University.  

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