Oncology
Geoffrey Ku, MD
Gastrointestinal Medical Oncologist & Cellular Therapist
Dr. Geoffrey Y. Ku is a gastrointestinal medical oncologist at Memorial Sloan Kettering Cancer Center, where he serves as Head of the Esophagogastric Section in the Gastrointestinal Oncology Service. He specializes in cancers of the esophageal, gastric, pancreatic, and colorectal systems, with particular clinical expertise in chemotherapy, immunotherapy, and CAR T-cell therapy for gastrointestinal malignancies. Dr. Ku's research focuses on developing novel therapeutic approaches, including combi
24+
Years in Practice
Credentials
Board Certifications
- Internal Medicine (ABIM)
- Medical Oncology (ABIM)
Education & Training
- Perelman School of Medicine, University of Pennsylvania — M.D. (2002)
- NY Presby/Weill Cornell Medical Center — Residency, Internal Medicine (2003-2005)
- Memorial Sloan Kettering Cancer Center — Fellowship, Medical Oncology (2006)
- Ludwig Center for Cancer Immunotherapy at MSK — Additional year
Peer Recognition
- Castle Connolly — America's Top Doctor
2023-2026 (4 years)
- Castle Connolly — Top AAPI Doctor
2023-2025 (3 years)
- New York Magazine — Top Doctors
2021-2024 (4 years)
2021-2025 (5 years)
- Top AAPI Doctors — Top AAPI Doctors
2023-2025 (3 years)
Recognition & Leadership
Awards & Honors
- Castle Connolly: America's Top Doctor (2026)
- Castle Connolly: America's Top Doctor (2025)
- Castle Connolly: Top AAPI Doctor (2024)
- Castle Connolly: America's Top Doctor (2024)
- Top Doctors New York Metro Area, Castle Connolly (2023)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Memorial Sloan Kettering Cancer Center
- Penn Presbyterian Medical Center
- Lancaster General Hospital
- Cleveland Clinic Martin North Hospital
Languages
English
Experience
24+ years in practice