Brian Holzhauer, RN

Primary specialty

Addiction (Substance Use Disorder) Registered NurseTaxonomy code 163WA0400X

License

198111-30 Issued in WI

Practice address

2422 N Grandview Blvd
Waukesha, WI 53188-6105

Phone

(262) 549-6600

NPI assigned

Oct 12, 2026

Last updated

Oct 12, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1791763200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791763200000",
    "number": "1922903806",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2422 N GRANDVIEW BLVD",
            "city": "WAUKESHA",
            "state": "WI",
            "postal_code": "531886105",
            "telephone_number": "262-549-6600"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2422 N GRANDVIEW BLVD",
            "city": "WAUKESHA",
            "state": "WI",
            "postal_code": "531886105",
            "telephone_number": "262-549-6600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLZHAUER",
        "first_name": "BRIAN",
        "credential": "RN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-10-12",
        "last_updated": "2026-10-12",
        "certification_date": "2026-10-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WA0400X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Addiction (Substance Use Disorder)",
            "state": "WI",
            "license": "198111-30",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Winston N Hollister, MD
• David Holloway, M.D.
• Emma Holmi
• Sarah Elizabeth Holtz, BA, SAC
• Ashley Holzbauer, LCSW, CSAC
• Donald Paul Holzhauer, D.D.S., M.S.
• Owen William Hombsch
• Hometown Hospice & Homecare Inc (St Croix Hospice)
• Abigail Homuth
• Carrie L Honerbaum

• Addiction (Substance Use Disorder) Registered Nurse in Waukesha, WI
• Providers in Waukesha, WI by specialty
• Addiction (Substance Use Disorder) Registered Nurse in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 12, 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.