Dr. Alissa Jill Mark, MD

Dr. Alissa Mark is a board-certified gastroenterologist and internal medicine physician with 25 years of experience in digestive health and comprehensive medical care. She earned her medical degree from the Lewis Katz School of Medicine at Temple University, building a strong foundation in both specialized gastrointestinal medicine and broad internal medicine practice. Her dual specialty training allows her to provide both focused digestive care and general medical management for her patients. Dr. Mark is fluent in English and Spanish, enabling her to serve diverse patient communities effectively.

Dr. Mark practices at several respected medical facilities, including Greenwich Hospital in Greenwich, Connecticut, and Montefiore Wakefield Hospital and Montefiore Hospital in New York. She specializes in treating common digestive conditions such as hemorrhoids, colon polyps, and diverticular disease. Her procedural expertise includes performing colonoscopies and lower GI endoscopies to …diagnose and monitor digestive health issues. Patients have given Dr. Mark an average rating of 3.5 on Vitals, reflecting their experiences with her care.