HealthCareAtlasUSA

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Doctors / WI

MARK D HORNEFFER, MD

INTERNAL MEDICINE

Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL

Graduated: 1990

Offers telehealth

NPI: 1710928965

Practice Locations (3)

COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC

13950 W CAPITOL DR

BROOKFIELD, WI 530052441

4144644460

COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC

10950 W CAPITOL DR

WAUWATOSA, WI 532221110

4144644460

COLUMBIA ST MARYS HOSPITAL MILWAUKEE INC

801 S 70TH ST

WEST ALLIS, WI 532143147

4147736600

Source: CMS National Downloadable File, September 2026.

MARK HORNEFFER, MD | HealthCareAtlasUSA