HealthCareAtlasUSA

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Doctors / WI

JOHN F BRENNAN, MD

NEPHROLOGY

Medical school: R FRANKLIN UNIVERSITY OF MED & SCI/CHICAGO MEDICAL SCHOOL

Graduated: 1991

Also: INTERNAL MEDICINE

NPI: 1154351153

Practice Locations (2)

MILWAUKEE NEPHROLOGISTS SC

2901 W KINNICKINNIC RIVER PKWY

MILWAUKEE, WI 532153660

4142598917

ASCENSION MEDICAL GROUP-SOUTHEAST WISCONSIN INC

3803 SPRING ST, SUITE 600

MOUNT PLEASANT, WI 534051660

2626878312

Source: CMS National Downloadable File, September 2026.

JOHN BRENNAN, MD | HealthCareAtlasUSA