

Oncology
Benjamin Tan, MD
Professor of Medicine, Division of Oncology, Washington University School of Medicine
Benjamin R. Tan, Jr., M.D., is a Professor of Medicine in the Division of Oncology at Washington University School of Medicine, where he has been on faculty since 1997. He earned his B.S. in Biology (cum laude) and his medical degree from the University of the Philippines, completing his internal medicine residency at Sinai Hospital of Baltimore and his hematology/oncology and clinical research fellowships at Washington University School of Medicine. Dr. Tan specializes in gastrointestinal and g
35+
Years in Practice
Credentials
Board Certifications
- American Board of Internal Medicine (Medical Oncology)
Education & Training
- Medical School: University of the Philippines College of Medicine (MD, 1989)
- Residency: Sinai Hospital of Baltimore (Internal Medicine)
- Fellowship: Washington University School of Medicine (Hematology/Oncology, 1994-1997)
- Fellowship: Washington University School of Medicine (Clinical Research, 1996-1998)
Peer Recognition
- Castle Connolly — Top Doctor
2022-2026 (5 years)
- Healthgrades — Healthgrades Honor Roll
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Barnes-jewish West County Hospital
- Barnes-jewish St Peters Hospital
- Barnes-Jewish West County Hospital
Experience
35+ years in practice