

Oncology
Andrew Seidman, MD
Breast Medical Oncologist
New York, NY
Dr. Andrew D. Seidman is a medical oncologist specializing in breast cancer at Memorial Sloan Kettering Cancer Center in New York, NY. With over 40 years of experience, he manages all subtypes and stages of breast cancer, from early-stage disease to advanced metastatic cases, including breast cancer that has spread to the brain. He treats conditions such as primary breast cancers, metastatic breast cancer, and secondary breast cancer metastases. His clinical expertise encompasses chemotherapy an
40+
Years in Practice
Credentials
Board Certifications
- Internal Medicine (ABIM)
- Medical Oncology (ABIM)
Education & Training
- Hahnemann University School of Medicine — MD, 1985
- Pennsylvania Hospital — Residency, Internal Medicine, 1985-1988
- Memorial Sloan Kettering Cancer Center — Fellowship, Medical Oncology/Hematology, 1989-1992
Peer Recognition
- Castle Connolly — America's Top Doctor
2023-2026 (4 years)
2021-2025 (5 years)
Clinical Focus
Subspecialties
Medical OncologyBreast Oncology
Conditions & Treatments
Breast CancerClinical Trials & Drug Development
Practice Details
Hospital Affiliations
- Memorial Sloan Kettering Cancer Center
- NewYork-Presbyterian Hospital
- NYC Health + Hospitals/Bellevue
Languages
English, Spanish
Experience
40+ years in practice