NPIMap

Individual provider Active NPI

John Holzhauer, M.D.

  • Emergency Medicine Physician
  • Viroqua, WI
National Provider Identifier
1548623747
Registry record updated Dec 16, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
68634-20 Issued in WI
Practice address
507 S Main St
Viroqua, WI 54665-2059
Phone
(608) 637-2101
NPI assigned
Apr 4, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 16, 2022

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 68634-20 WI Primary

Addresses

Primary practice location

507 S Main St
Viroqua, WI 54665-2059

Mailing address

49495 Docs LN
Gays Mills, WI 54631-8260
Phone (608) 872-2345

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20200401000786 WI Practitioner - Emergency Medicine 2769775006 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
The Medical College of Wisconsin IncGroup PAC ID 2668384371, 2,092 clinicians

Practice addresses (Care Compare)

8701 W Watertown Plank
Milwaukee, WI 53226-3548
Phone (414) 805-3666

8701 Watertown Plank Rd
Room 4041 MFRC
Milwaukee, WI 53226-3548
Phone (414) 805-3666

Hospital & facility affiliations

  • Upland Hills Health Hospital, Dodgeville, WI, CCN 521352
  • SSM Health St Mary'S Hospital - Madison Hospital, Madison, WI, CCN 520083
  • Reedsburg Area Medical Center Hospital, Reedsburg, WI, CCN 521351
  • Froedtert Community Hospital Hospital, New Berlin, WI, CCN 520213
  • Vernon Memorial Hospital Hospital, Viroqua, WI, CCN 521348

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
68634-20WIMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Prairie Ridge Health Inc. CurrentSince Nov 1, 2025 Accepting new patients
Vernon Memorial Healthcare, Inc. CurrentSince Apr 1, 2020 Accepting new patients
Reedsburg Area Medical Center, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Prairie Ridge Health, Inc. Current Accepting new patients
Froedtert &the Medical College of Wisconsin Community Physicians, Inc. CurrentSince Feb 8, 2023 Accepting new patients
Madison Emergency Physicians, SC Emergency Medicine CurrentSince Jun 1, 2023 Accepting new patients
Froedtert &the Medical College of Wisconsin Community Physicians, Inc. CurrentSince Feb 8, 2023 Accepting new patients
Reedsburg Area Medical Center Inc CurrentSince Aug 1, 2023 Accepting new patients
St Luke'S Methodist Hospital Current Accepting new patients
Prairie Ridge Health, Inc. CurrentSince Nov 1, 2025 Accepting new patients
The Medical College of Wisconsin, Inc. Emergency Medicine CurrentSince Feb 3, 2023 Accepting new patients
The Medical College of Wisconsin Inc Past Accepting new patients
Vernon Memorial Healthcare, Inc. Past Accepting new patients

Locations

1515 Park Ave
Columbus, WI 53925
Phone (920) 623-1200

W168N11237 Western Ave
Germantown, WI 53022
Phone (262) 253-5060

700 S Park St
Madison, WI 53715
Phone (608) 260-2900

N74W12501 Leatherwood Ct
Menomonee Falls, WI 53051
Phone (414) 454-4744

W180N8085 Town Hall Rd
Menomonee Fls, WI 53051
Phone (262) 257-5000

2301 N Lake Dr
Milwaukee, WI 53211
Phone (414) 270-4932

2000 N Dewey Ave
Reedsburg, WI 53959
Phone (608) 524-6487

507 S Main St
Viroqua, WI 54665
Phone (608) 637-2101

1155 N Mayfair Rd
Wauwatosa, WI 53226
Phone (414) 955-5990

8701 Watertown Plank Rd
Wauwatosa, WI 53226
Phone (414) 456-4100

9200 W Wisconsin Ave
Wauwatosa, WI 53226
Phone (414) 259-3000

3200 Pleasant Valley Rd
West Bend, WI 53095
Phone (262) 334-5533

Interoperability endpoints

  • Direct secure messaging: jholzhauer82063@direct.emplifyhealth.org
  • Direct secure messaging: jholzhauer479325@direct-ehr-ssmhc.com
  • Direct secure messaging: jholzhauer305498@direct.unitypoint.org

Organizations & group practices 13

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

View all 13

Hospital & facility affiliations 14

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

View all 14

NPI Registry JSON

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

{
    "created_epoch": "1459728000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1671148800000",
    "number": "1548623747",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "49495 DOCS LN",
            "city": "GAYS MILLS",
            "state": "WI",
            "postal_code": "546318260",
            "telephone_number": "608-872-2345"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "507 S MAIN ST",
            "city": "VIROQUA",
            "state": "WI",
            "postal_code": "546652059",
            "telephone_number": "608-637-2101"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOLZHAUER",
        "first_name": "JOHN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-04-04",
        "last_updated": "2022-12-16",
        "certification_date": "2022-12-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "68634-20",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Viroqua, WI

Sources for this page

Verify at the official NPI Registry.