Memorial Sloan Kettering doctors, including oncologists, surgeons, radiologists, pathologists, psychiatrists, and more, treat every cancer type and are part of your care team at MSK. To learn about our doctors, find a specialist near you, or make an appointment, please see our listings below. You can search by disease, location, department, treatment procedure, and language spoken.
Colorectal Surgeon & Clinical Geneticist
Mohammad Ali Abbass, MD, MPH
Assistant Attending Physician; Co-Lead, Inherited GI Cancer Genomics, Niehaus Center
Gastrointestinal Medical Oncologist
Alice Zervoudakis, MD
Clinical Director, Gastrointestinal Oncology Service
Gastroenterologist
Mark A. Schattner, MD, FASGE, AGAF
Chief, Gastroenterology, Hepatology and Nutrition Service
Gastrointestinal Medical Oncologist
Nitya Raj, MD
Vice Chair, Quality Assurance, Department of Medicine; Medical Site Director, Laurence S. Rockefeller Outpatient Pavilion at 53rd Street