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Prohealth Medical Group Inc

Internal Medicine Physician in Muskego, WI · enumerated 2007 · authorized official Peter Geiss, MD, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1114068970

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Registry record

Entity type Organization (Type 2)
Legal business name Prohealth Medical Group Inc
Parent organization Prohealth Medical Group Inc
Practice address S69w15636 Janesville Rd, Muskego, WI, 53150
Phone (262) 928-7000
Fax (414) 422-2075
Enumeration date Feb 12, 2007
Last updated in NPPES May 23, 2022

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Peter Geiss, MD
Title President
Phone (262) 928-8669

Other identifiers

Identifier Type State Issuer
32819000 Medicaid WI -
0505180004 Other WI DME

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Prohealth Medical Group Inc?
Prohealth Medical Group Inc is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-23.