Dr. Arnold Markowitz is a gastroenterologist with expertise in colon cancer screening and prevention. He has particular clinical and research interests in the care of people with hereditary colon cancer syndromes, such as Lynch syndrome and familial adenomatous polyposis (FAP). He has been at Memorial Sloan Kettering since 1994 and serves as the Director of the Advanced Gastrointestinal Endoscopy Fellowship Training Program.