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

JOSEPH P REGAN, MD

GENERAL SURGERY

Medical school: NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL

Graduated: 1996

NPI: 1639116486

Practice Locations (1)

MADISON MEDICAL AFFILIATES INC

13133 N PORT WASHINGTON RD, SUITE 224

MEQUON, WI 530972420

2622430064

Source: CMS National Downloadable File, September 2026.

JOSEPH REGAN, MD | HealthCareAtlasUSA