Individual provider Active NPI

Erik John Onsrud, D.C.

  • Chiropractor
  • Monroe, WI
National Provider Identifier
1679534259
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
ChiropractorTaxonomy code 111N00000X
License
3475 Issued in WI
Practice address
404 W 10 1/2 St
Monroe, WI 53566-1378
Phone
(608) 328-8226
Fax
(608) 328-8226
NPI assigned
Mar 31, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Chiropractor 111N00000X 3475 WI Primary

Addresses

Primary practice location

404 W 10 1/2 St
Monroe, WI 53566-1378

Mailing address

404 W 10 1/2 St
Monroe, WI 53566-1378
Phone (608) 328-8226

Other identifiers 1

IdentifierTypeStateIssuer
38903300MedicaidWI

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20111103000194 WI Practitioner - Chiropractic 2466625629 Practice locations: Monroe, WI

Care Compare profile

Medicare Care Compare
Specialty
Chiropractic
Education
Palmer College Chiropractic - Davenport, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

404 W 10
Monroe, WI 53566-1378
Phone (608) 328-8226

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
3475WIMDNurse Practitioner

NPI Registry JSON

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

{
    "created_epoch": "1143763200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1679534259",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "404 W 10 1/2 ST",
            "city": "MONROE",
            "state": "WI",
            "postal_code": "535661378",
            "telephone_number": "608-328-8226",
            "fax_number": "608-328-8226"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "404 W 10 1/2 ST",
            "city": "MONROE",
            "state": "WI",
            "postal_code": "535661378",
            "telephone_number": "608-328-8226",
            "fax_number": "608-328-8226"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ONSRUD",
        "first_name": "ERIK",
        "middle_name": "JOHN",
        "name_prefix": "Dr.",
        "credential": "D.C.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-31",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "WI",
            "license": "3475",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "38903300",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Monroe, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.