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

THOMAS A JOHNSON, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF ILLINOIS COLLEGE OF MED (CHI/PEOR/ROCK/CHM-URB)

Graduated: 1976

NPI: 1891762852

Practice Locations (1)

ASCENSION MEDICAL GROUP-SOUTHEAST WISCONSIN INC

17000 W N AVE, SUITE 104W

BROOKFIELD, WI 530054423

2627851500

Source: CMS National Downloadable File, September 2026.

THOMAS JOHNSON, MD | HealthCareAtlasUSA