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 / AZ

WILLIAM R FOSTER, MD

ANESTHESIOLOGY

Medical school: NEW YORK MEDICAL COLLEGE

Graduated: 2018

NPI: 1093204174

Practice Locations (2)

IAS ARIZONA PLLC

5301 E GRANT RD

TUCSON, AZ 857122805

4693401366

NORTHWEST HBP MEDICAL SERVICES LLC

6200 N LA CHOLLA BLVD

TUCSON, AZ 857413529

5202292657

Source: CMS National Downloadable File, September 2026.

WILLIAM FOSTER, MD | HealthCareAtlasUSA