Dr. Ewa M. Preneta

Marvin Ryou is a Gastroenterologist and a Hepatologist practicing medicine in Jamaica Plain, Massachusetts. Dr. Ryou is highly rated in 31 conditions, according to our data. His clinical expertise encompasses Esophageal Varices, Portal Hypertension, Bile Duct Obstruction, Endoscopy, and Gastrostomy. Dr. Ryou is board certified in Gastroenterology. Dr. Ryou is currently accepting new patients.

Dr. Saltzman is the Director of Endoscopy at the Brigham and Women’s Hospital and the Director of the Brigham and Women’s Hospital Advanced Endoscopy Fellowship Program.  He is a Professor of Medicine, part-time, at Harvard Medical School and is actively involved in patient care, teaching, clinical research, and administration.His areas of expertise include upper gastrointestinal hemorrhage and all areas of endoscopy. He has served as the President of the New England Endoscopy Society and as a Governor for the State of Massachusetts for the American College of Gastroenterology. His editorial activities include being an Associate Editor of Gastrointestinal Endoscopy and the Section Editor for Diagnostic and Therapeutic Endoscopy for UpToDate.He is the immediate past Chair of the Educational Affairs Committee for the American College of Gastroenterology and currently serves as a trustee for the American College of Gastroenterology. Dr. Saltzman is an active investigator in multiple areas including upper gastrointestinal bleeding, new endoscopic technologies and improving colon cancer detection/prevention. Dr. Saltzman is highly rated in 7 conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Colorectal Polyps, Attenuated Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy. Dr. Saltzman is board certified in Gastroenterology. Dr. Saltzman is currently accepting new patients.

Scott Snapper is a Gastroenterologist and a Hepatologist practicing medicine in Chestnut Hill, Massachusetts. Dr. Snapper is highly rated in 5 conditions, according to our data. His clinical expertise encompasses Viral Gastroenteritis, Colitis, Crohn's Disease, Colonoscopy, and Endoscopy. Dr. Snapper is board certified in Gastroenterology. Dr. Snapper is currently accepting new patients.