About Advanced Medical GI

Advanced Medical GI has served the Northern Virginia community for over three decades, providing comprehensive digestive health care with a personal touch.

Founded by Dr. R. Allen Blosser, our practice is built on the belief that excellent medical care starts with listening. With more than 75,000 endoscopic procedures performed, our team combines deep clinical experience with genuine compassion for every patient who walks through our doors.

Located at 1800 Alexander Bell Drive in Reston, we serve patients from across the greater Washington, D.C. area. Our office is equipped with modern endoscopy facilities, allowing us to perform most procedures on-site in a comfortable, familiar environment.

We offer a full range of gastroenterology services — from routine colonoscopies and diagnostic endoscopy to specialized weight loss procedures and complex therapeutic interventions. Whether you need a screening, a second opinion, or ongoing care for a chronic condition, we’re here to help.