

Hematology
William Tap, MD
Chief, Sarcoma Medical Oncology Service
Dr. William D. Tap is a medical oncologist specializing in sarcomas at Memorial Sloan Kettering Cancer Center (MSKCC) in New York, NY. He focuses on soft tissue sarcomas, including adult soft tissue sarcoma, gastrointestinal stromal tumor (GIST), angiosarcoma, liposarcoma, Ewing's sarcoma, and undifferentiated pleomorphic sarcoma, as well as bone cancers and related conditions. His practice serves adult patients with these rare malignancies, providing comprehensive care through individualized tr
25+
Years in Practice
Credentials
Board Certifications
- Medical Oncology (ABIM)
- Hematology (ABIM)
- Internal Medicine (ABIM)
Education & Training
- Sidney Kimmel Medical College at Thomas Jefferson University — M.D., 2000
- Vanderbilt University Medical Center — Residency, Internal Medicine, 2000-2003
- UCLA Medical Center — Fellowship, Hematology & Oncology, 2003-2006
Peer Recognition
- Castle Connolly — America's Top Doctor
2024-2026 (3 years)
- New York Magazine — Top Doctors
2015-2016, 2018-2020 (5 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: America's Top Doctors (2023)
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Memorial Sloan Kettering Cancer Center
- Vassar Brothers Medical Center
- Yale New Haven Hospital
Languages
English
Experience
25+ years in practice