NPIMap

Organization Active NPI

Prohealth Medical Group Inc

  • Family Medicine Physician
  • Brookfield, WI
National Provider Identifier
1891836680
Registry record updated Aug 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Medicine PhysicianTaxonomy code 207Q00000X
Legal business name
PROHEALTH MEDICAL GROUP INC
Practice address
195 Discovery Dr
Brookfield, WI 53045-2862
Phone
(262) 928-7100
Fax
(262) 928-7111
NPI assigned
Feb 12, 2007
Last updated
Aug 11, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
PROHEALTH MEDICAL GROUP INCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Aug 11, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X Primary
Internal Medicine Physician 207R00000X
Gastroenterology Physician 207RG0100X

Addresses

Primary practice location

195 Discovery Dr
Brookfield, WI 53045-2862

Mailing address

N17 W24100 Riverwood Dr
Suite 250
Waukesha, WI 53188-1131
Phone (262) 928-4100

Other identifiers 2

IdentifierTypeStateIssuer
0505180005OtherWIDME
32819200MedicaidWI

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20111207000715 WI DME Supplier - Physician - General Surgery 3476465188 Practice locations: Brookfield, WI

Other NPIs with the same Medicare PAC ID 11

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
52D0388174Prohealth Medical Group, Inc -195 Discovery Dr, Brookfield, WI 53045Provider-performed microscopyMar 14, 2028
52D2005009Prohealth Medical Group, Inc Occupational Health195 Discovery Drive, Brookfield, WI 53045Certificate of waiverMar 16, 2028
52D2215231Prohealth Medical Group, Inc-195 Discovery Dr, Brookfield, WI 53045Certificate of waiverMar 1, 2027

National Provider Directory

National Provider Directory
Tax ID family
Med Assoc Men Falls LTD13 organizations share this tax ID, including this one
Part of
Med Assoc Men Falls LTD

Other organizations with this tax ID 12

Organizations that report the same tax identification number in the National Provider Directory.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1171238400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786406400000",
    "number": "1891836680",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "N17 W24100 RIVERWOOD DR",
            "address_2": "SUITE 250",
            "city": "WAUKESHA",
            "state": "WI",
            "postal_code": "531881131",
            "telephone_number": "262-928-4100",
            "fax_number": "262-928-5835"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "195 DISCOVERY DR",
            "city": "BROOKFIELD",
            "state": "WI",
            "postal_code": "530452862",
            "telephone_number": "262-928-7100",
            "fax_number": "262-928-7111"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "PROHEALTH MEDICAL GROUP INC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "PROHEALTH MEDICAL GROUP INC",
        "enumeration_date": "2007-02-12",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A",
        "authorized_official_last_name": "GEISS, MD",
        "authorized_official_first_name": "PETER",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "262-928-8669"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DME",
            "identifier": "0505180005",
            "state": "WI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "32819200",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Brookfield, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.