Margaret Diane Horrigan, RD

Primary specialty

Registered DietitianTaxonomy code 133V00000X

License

86104695 Issued in WI

Practice address

3365 S 103Rd St Ste 100
Milwaukee, WI 53227-4162

Phone

(414) 321-3951

NPI assigned

Mar 21, 2023

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

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

{
    "created_epoch": "1679356800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771372800000",
    "number": "1093417214",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE # MC845",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3365 S 103RD ST STE 100",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532274162",
            "telephone_number": "414-321-3951"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HORRIGAN",
        "first_name": "MARGARET",
        "middle_name": "DIANE",
        "credential": "RD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-03-21",
        "last_updated": "2026-02-18",
        "certification_date": "2026-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "WI",
            "license": "86104695",
            "primary": true
        },
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": "WI",
            "license": "6202",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Keenan Marie Horness, PA-C
• Michelle Horng
• Olga Hornsby, MPAS, PA-C
• Anthony P Hornung, PT
• Mary M Horowitz, MD
• Mary Horrigan, MSW
• Alexis Hortman
• Dominique Horton, CSAC
• S. Fredric Horwitz I, M.D.
• Jocelynn Hosea-Davis, M.S.W., S.A.C.I.T.

• Registered Dietitian in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Registered Dietitian in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.