HealthCareAtlasUSA

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

ALEXANDER R WALKER, MD

INTERNAL MEDICINE

Graduated: 2019

NPI: 1386209831

Practice Locations (3)

330 MOUNT AUBURN ST

CAMBRIDGE, MA 021385597

3 CORPORATE DR, SUITE 201

HALFMOON, NY 120658635

902 LEROY RD

SYRACUSE, NY 132123243

Source: CMS National Downloadable File, September 2026.

ALEXANDER WALKER, MD | HealthCareAtlasUSA