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

John R Betz, MD

Individual provider Internal Medicine Physician · NPI 1659399194

John R Betz, MD is an Internal Medicine in Milwaukee, Wisconsin. Graduated from Medical College of Wisconsin in 2000, 26 years ago. Practices with Madison Medical Affiliates Inc, a 86-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
26
Trained at
Medical College of Wisconsin
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

788 N Jefferson St Ste 300
Milwaukee, WI 53202-3718
Phone: (414) 272-8950
Fax: (414) 272-0859
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 45610 (WI)

Record details

NPI number1659399194
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESNovember 7, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2000 (26 years in practice)
Group practice Madison Medical Affiliates Inc — 86 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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