• 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.

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

News & Announcements

  • 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

See all

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


703.281.1023 703.620.2331 Secure Message via Portal


Reston Office


11440 Commerce Park Drive Suite LL
Reston, VA 20190


703.281.1023 703.715.3462 Secure Message via Portal


Loudoun Office


44055 Riverside Parkway Suite 242
Leesburg, VA 20176


Patient Portal

Privia Medical Group offers patients personalized and secure 24/7 online access to their health records, as well as the ability to communicate with your medical care team through our patient portal.


Schedule Appointments

The easiest way to book an appointment with your provider.

Request Prescriptions

Review prescription medications and request prescription renewals.

Secure Messages

Send and receive secure messages with your medical care team.

View Your Records & Tests

Quick access to your secure electronic medical record and test results.

Pay Your Bill

Pay your invoices by credit card, securely and conveniently.