Needham Gastroenterology Associates' physicians are board-certified gastroenterologists covering many specialties.

Needham Gastroenterology Associates’ physicians are all committed healthcare professionals who specialize in the health of the digestive system. They strive for the highest level of care and professionalism, and listen with compassion to our patients’ desires and needs. Our goal is to build a long-lasting relationship of trust and commitment. 

Staff Directory

Stephen Cohen

Steven B. Cohen, MD

Certified Gastroenterologist

Michal Tomcza

Michal Tomczak, MD

Certified Gastroenterologist

Sonal Ullman

Sonal M. Ullman, MD

Certified Gastroenterologist