Gastroenterology & Weight Loss · Reston, Virginia
Expert Gastroenterology, Advanced Endoscopy and Weight Loss Care
Dr. R. Allen Blosser and team have provided trusted gastroenterology care for over 38 years, with more than 75,000 procedures performed.
4.3★ on Google · Washingtonian Top Doctor

Advanced Medical GI
Gastroenterology & Weight Loss · Reston, Virginia
38+
Years Practicing
75,000+
Procedures
Top Doctor
Washingtonian
4.3★
Google Reviews

Lead Physician
R. Allen Blosser, MD, FAGA
Board certified in internal medicine and gastroenterology, Dr. Blosser completed his residency at Georgetown University Hospital and is a Fellow of the American Gastroenterological Association. Over more than 38 years he has performed in excess of 75,000 procedures, with a complication rate well below the national average, and has contributed to the development of several endoscopic devices — including intragastric balloons, Stretta, EXALT ERCP, and SpyGlass technology.
- Georgetown University Hospital — Residency
- Eastern Virginia Medical School, 1988
- Fellow, American Gastroenterological Association
- Board Certified — Internal Medicine & Gastroenterology
Visit our office
Advanced Medical GI
1800 Alexander Bell Dr, Suite 515
Reston, VA 20191
Office: (703) 535-6640
Fax: (703) 620-2331
Office hours
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