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Prohealth Medical Group Inc

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

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

National Provider Identifier

1629119417

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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 109 Air Park Dr, Watertown, WI, 53094
Phone (262) 928-5100
Fax (262) 928-5111
Enumeration date Feb 12, 2007
Last updated in NPPES May 23, 2022

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Secondary
207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

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

Other identifiers

Identifier Type State Issuer
32877500 Medicaid WI -
0505180009 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

Who is the authorized official for Prohealth Medical Group Inc?
NPPES lists Peter Geiss, MD (President) as the authorized official for this organization.
What is the NPI number for Prohealth Medical Group Inc?
The NPI for Prohealth Medical Group Inc is 1629119417, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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