

Gastroenterology
Marvin Ryou, M.D.
Associate Professor of Medicine, Harvard Medical School; Advanced Gastroenterologist, Brigham and Women's Hospital
Dr. Marvin Ryou is an Associate Professor of Medicine at Harvard Medical School and an advanced gastroenterologist at Brigham and Women's Hospital in Boston, MA, with over 20 years of clinical experience. His clinical expertise spans pancreatic and biliary disorders, with particular focus on advanced endoscopic techniques including endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), and endoscopic mucosal resection (EMR). Dr. Ryou demonstrates high clinical volume
23+
Years in Practice
Credentials
Board Certifications
- Internal Medicine (ABIM)
- Gastroenterology (ABIM)
Education & Training
- Harvard Medical School — M.D., 2003
- Brigham and Women's Hospital — Residency, Internal Medicine, 2003-2006
- Brigham and Women's Hospital — Fellowship, Gastroenterology, 2007-2010
- Massachusetts General Hospital / Brigham and Women's Hospital — Fellowship, Advanced Endoscopy, 2010-2011
Peer Recognition
- Castle Connolly — Top Doctor
2022-2026 (5 years)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Dana-Farber Cancer Institute
- Emerson Hospital
- Brigham and Women's Hospital
Languages
English
Experience
23+ years in practice