Dr. Martin S.Weiser

Dr. Martin R. Weiser, MD, is an internationally recognized colorectal surgeon specializing in the surgical management of gastrointestinal malignancies. He holds the Stuart H.Q. Quan Chair in Colorectal Surgery at Memorial Sloan Kettering Cancer Center, where he also serves as Vice Chair for Faculty Affairs in the Department of Surgery. Dr. Weiser earned his medical degree from the University of Chicago Pritzker School of Medicine, followed by a residency in general surgery at Brigham and Women’s Hospital. He completed fellowships in surgical oncology at Memorial Sloan Kettering and colon and rectal surgery at Mount Sinai Medical Center. Board-certified in both General Surgery and Colon & Rectal Surgery, he is widely regarded for his precision in treating cancers of the colon, rectum, anus, appendix, and small intestine.