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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

The bright, welcoming reception and waiting area at Advanced Medical GI in Reston, Virginia

Advanced Medical GI

Gastroenterology & Weight Loss · Reston, Virginia

38+

Years Practicing

75,000+

Procedures

Top Doctor

Washingtonian

4.3★

Google Reviews

Dr. R. Allen Blosser

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
Meet our full team

Visit our office

Advanced Medical GI
1800 Alexander Bell Dr, Suite 515
Reston, VA 20191

Office: (703) 535-6640

Fax: (703) 620-2331

Get directions (opens Google Maps in a new tab)

Office hours

Monday – Friday8:00 AM – 5:00 PM
Saturday – SundayClosed

New patients

Please complete your patient forms before your first visit to save time at check-in.

Coverage

Insurances we accept

We participate with most major insurance plans. Please call our office to confirm your coverage before your visit.

United Healthcare
Cigna
Aetna
GEHA
Tricare
Medicare
Anthem Blue Cross Blue Shield
BCBS FEP
CareFirst

Ready to schedule?

Call our office or request an appointment online. We see new and existing patients.