Dr. Weiming Ryan Yan, MD

Dr. Weiming Yan is a board-certified gastroenterologist who also practices internal medicine, bringing 18 years of clinical experience to his patients. He earned his medical degree from Ohio State University College of Medicine & Public Health, where he developed expertise in digestive health and comprehensive internal medicine care. Dr. Yan is fluent in both English and Spanish, allowing him to serve a diverse patient population.

Dr. Yan maintains affiliations with several respected healthcare institutions, including MedStar Franklin Square Medical Center, University of Maryland Baltimore Washington Medical Center, Frederick Health Hospital, Northwest Hospital, and Carroll Hospital. He practices primarily in Frederick, Maryland, and also sees patients in Gaithersburg. His clinical focus includes treating colon polyps, GERD, and acid reflux through both medical management and advanced procedures. Dr. Yan performs colonoscopies and upper and lower gastrointestinal endoscopies to …diagnose and treat digestive conditions. Patients have given him an average rating of 3.7 out of 5 on Vitals.