Trevor Koslowski

Primary specialty

Gerontology Nurse PractitionerTaxonomy code 363LG0600X

License

18000 Issued in WI

Practice address

98 Sherry Ave
Park Falls, WI 54552-1467

Phone

(715) 762-2484

NPI assigned

Aug 15, 2025

Last updated

Feb 27, 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 2

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in WI

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Flambeau Hospital, Inc.Group PAC ID 9032029871, 40 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Flambeau Hospital Hospital, Park Falls, WI, CCN 521325

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir-myrecord.cerner.com/r4/67ff075a-8289-4f2d-a8eb-5dc1f0d954ab/

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

• Flambeau Hospital Inc

  dba Marshfield Medical Center - Park Falls

  • Critical Access Hospital
  • Park Falls, WI
  • NPI 1700963048
  Medicare reassignment Care Compare group NPD
• Beaver Dam Community Hospitals Inc

  dba Marshfield Medical Center - Beaver Dam Professional Services

  • Clinic/Center
  • Beaver Dam, WI
  • NPI 1972188555
  Medicare reassignment NPD
• Lakeview Medical Center Inc of Rice Lake

  dba Marshfield Medical Center - Rice Lake Professional Services

  • Clinic/Center
  • Rice Lake, WI
  • NPI 1093201832
  Medicare reassignment NPD
• Marshfield Clinic Inc

  dba Marshfield Clinic Florida Teleradiology/Telehealth

  • Clinic/Center
  • Marshfield, WI
  • NPI 1952347981
  Medicare reassignment NPD
• MCHS Hospitals Inc

  dba Marshfield Medical Center - Ladysmith

  • Critical Access Hospital
  • Ladysmith, WI
  • NPI 1952890873
  Medicare reassignment NPD
• Memorial Hospital Inc

  dba Marshfield Medical Center - Neillsville

  • Critical Access Hospital
  • Neillsville, WI
  • NPI 1346239373
  Medicare reassignment NPD
• Flambeau Hospital Inc

  dba MMC - Park Falls Outreach Services

  • Clinic/Center
  • Park Falls, WI
  • NPI 1194317966
  Medicare reassignment
• MCHS Hospitals Inc

  dba Marshfield Medical Center

  • Clinic/Center
  • Marshfield, WI
  • NPI 1093221434
  Medicare reassignment
• Beaver Dam Community Hospitals Inc

  dba Hillside Unit Pharmacy (DME)

  • Pharmacy
  • Beaver Dam, WI
  • NPI 1295771780
  NPD
• Lakeview Medical Center Inc of Rice Lake

  dba LMC Inc of Rice Lake Freestanding Clinics

  • Clinic/Center
  • Chetek, WI
  • NPI 1659008605
  NPD
• MCHS Hospitals Inc

  dba Marshfield Medical Center - Eau Claire Cancer Center

  • Durable Medical Equipment & Medical Supplies
  • Eau Claire, WI
  • NPI 1558230847
  NPD
• MCHS Hospitals Inc

  dba Marshfield Medical Center - Weston Professional Services

  • Clinic/Center
  • Weston, WI
  • NPI 1992336655
  NPD

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

• Flambeau Hospital Inc

  dba Marshfield Medical Center - Park Falls

  • Critical Access Hospital
  • Park Falls, WI
  • NPI 1700963048
  Care Compare affiliation

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

{
    "created_epoch": "1755216000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772150400000",
    "number": "1437035110",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "98 SHERRY AVE",
            "city": "PARK FALLS",
            "state": "WI",
            "postal_code": "545521412",
            "telephone_number": "715-762-2484"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "98 SHERRY AVE",
            "city": "PARK FALLS",
            "state": "WI",
            "postal_code": "545521467",
            "telephone_number": "715-762-2484"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOSLOWSKI",
        "first_name": "TREVOR",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-08-15",
        "last_updated": "2026-02-27",
        "certification_date": "2026-02-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "WI",
            "license": "18000",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "him@marshfieldclinichealthsystem.cernerdirect.com",
            "affiliation": "N",
            "address_1": "98 Sherry Ave",
            "city": "Park Falls",
            "state": "WI",
            "country_code": "US",
            "postal_code": "545521467",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Tyler Kennedy, PHARM D
• Gregory J Klatkiewicz, PTGCS
• Bruce H Klockow, D.D.S.
• Brian J. Knabe, MD
• Joan Deanne Korpi Chauss, OTR/L, CEA
• McKenzie Leigh Krause, RPH
• Labco, LLC
• Traci Lynn Laughlin, LPC
• Rhonda Jean Madigan, COTA
• Manor Medical Supply Inc.

• Gerontology Nurse Practitioner in Park Falls, WI
• Providers in Park Falls, WI by specialty
• Gerontology Nurse Practitioner in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.