Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Joseph P Regan, MD

Individual provider Surgery Physician · NPI 1639116486

Joseph P Regan, MD is a General Surgery in Mequon, Wisconsin. Graduated from Northwestern University Feinberg Medical School in 1996, 30 years ago. Practices with Madison Medical Affiliates Inc, a 86-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
30
Trained at
Northwestern University Feinberg Medical School
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

13133 N Port Washington Rd Ste 224
Mequon, WI 53097-2420
Phone: (262) 240-0070
Fax: (262) 243-0072
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 45445 (WI)

Record details

NPI number1639116486
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 1, 2006
Last updated in NPPESNovember 9, 2016

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Madison Medical Affiliates Inc — 86 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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