This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / MA

ROBERT J MAYER, MD

MEDICAL ONCOLOGY

Medical school: HARVARD MEDICAL SCHOOL

Graduated: 1969

Also: HEMATOLOGY

NPI: 1659361327

Practice Locations (2)

DANA-FARBER CANCER INSTITUTE, INC.

450 BROOKLINE AVE

BOSTON, MA 022155418

DANA-FARBER CANCER INSTITUTE, INC.

450 BROOKLINE AVE

BOSTON, MA 022155450

Source: CMS National Downloadable File, September 2026.

ROBERT MAYER, MD | HealthCareAtlasUSA