Gastroenterology
Arnold Markowitz, MD
Director, Advanced Gastrointestinal Endoscopy Fellowship Training Program
Arnold J. Markowitz, MD, is a gastroenterologist at Memorial Sloan Kettering Cancer Center (MSKCC) in New York, NY, specializing in colon cancer screening and prevention. With over 30 years of experience, he focuses on hereditary gastrointestinal cancer syndromes, including Lynch syndrome, polyposis syndromes such as familial adenomatous polyposis (FAP), and family history of GI tract cancer. Dr. Markowitz performs key diagnostic procedures like colonoscopy and esophagogastroduodenoscopy (EGD) t
35+
Years in Practice
Credentials
Board Certifications
- Gastroenterology (ABIM)
Education & Training
- New York University School of Medicine — M.D.
- University of Michigan Medical Center — Fellowship, Gastroenterology
- University of Pennsylvania Medical Center — Fellowship
- New York University Medical Center — Residency, Internal Medicine
Peer Recognition
- Castle Connolly — America's Top Doctor
2024-2026 (3 years)
2024-2025 (2 years)
2014-2020 (7 years)
Recognition & Leadership
Awards & Honors
- Castle Connolly: America's Top Doctor (2026)
- Castle Connolly: America's Top Doctor (2025)
- Castle Connolly: America's Top Doctor (2024)
- Top Doctors New York Metro Area, Castle Connolly (2023)
- Castle Connolly: New York Magazine Top Doctors (2014-2020)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Memorial Sloan Kettering Cancer Center
- Memorial Hospital for Cancer and Allied Diseases
Languages
English
Experience
35+ years in practice