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 / WI

STEVE R JOHNSTON, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE

Graduated: 1994

NPI: 1275623993

Practice Locations (2)

COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC

2301 N LAKE DR

MILWAUKEE, WI 532114508

4145851000

ASCENSION MEDICAL GROUP-SOUTHEAST WISCONSIN INC

3801 SPRING ST

MOUNT PLEASANT, WI 534051667

2626874011

Source: CMS National Downloadable File, September 2026.