• Now accepting new patients

    Superior, Comprehensive Services in a Compassionate Environment

    The mission of GMA is to provide superior, comprehensive gastroenterology services in a compassionate environment. We specialize in traditional and innovative clinical approaches to digestive disorders, including an array of endoscopic services.

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Top Doctor Award Congratulations to Dr. Blosser, a Washingtonian 2016 Top Doctor!

News & Announcements

Functional GI Disorders Clinic

GMA is proud to offer a NEW Functional GI Disorders (FGID) Clinic. The clinic will be headed by Dr. Leonard Fischer, a specialist in the field of functional GI disorders…. Read More

Introducing Hemorrhoid Treatment

Gastrointestinal Medicine Associates is now offering the CRH O’Regan System®. A simple, painless and effective way to treat hemorrhoids! Hemorrhoids are nothing to be embarrassed about – in fact, about… Read More

Welcome Dr. Hani Sabahi!

Gastrointestinal Medicine Associates would like to welcome Dr. Hani Sabahi as a member of our team. Dr. Sabahi earned his medical degree from Jordan University of Science and Technology. He… Read More

Proud to be Part of Privia Medical Group

Gastrointestinal Medicine Associates is a proud member of Privia Medical Group. The best doctors in our community have joined together to form Privia Medical Group (PMG), a multi-specialty, high-performance medical group that puts patients first. Our physicians are united by the mission of providing better, more coordinated care for their patients.

To learn more about Privia Medical Group and find other Privia doctors, please visit our website.

The most impressive thing is that they treated me like an adult...Overall, it was a fantastic experience for a not so fantastic reason. If I ever have to have another [procedure], I will be back!
Michelle P.

Fairfax Office


3620 Joseph Siewick Drive Suite 307
Fairfax, VA 22033 Get Directions


703.281.1023 703.620.2331 Secure Message via Portal


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Reston Office


11440 Commerce Park Drive Suite LL
Reston, VA 20190 Get Directions


703.281.1023 703.715.3462 Secure Message via Portal


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Loudoun Office


44055 Riverside Parkway Suite 242
Leesburg, VA 20176 Get Directions


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Patient Portal

Access your personal health information and test results, securely message your care team, and manage payments, all from one spot and at your convenience, 24/7.

  • See your provider's openings and schedule appointments.
  • Review prescription medications and request renewals.
  • View payment history and pay current invoices.
Patient Portal