Gregory R Trost, MD

Primary specialty

Neurological Surgery PhysicianTaxonomy code 207T00000X

License

30533 Issued in WI

Practice address

9701 Trappers TRL
Middleton, WI 53562-5061

Phone

(608) 203-6321

NPI assigned

Feb 28, 2006

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

Eligible to order & refer

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

Green means eligible to order or refer.

Specialty

Neurosurgery

Education

University of Wisconsin School of Medicine, 1988

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Wi Hospitals & Clinics Authority Hospital, Madison, WI, CCN 520098

Merit-based Incentive Payment System (MIPS)

Final score

83.32 of 100Reported as group

Quality

87.78

Promoting interoperability

77

Improvement activities

40

Cost

75.8

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

• University of Wisconsin Hospitals and Clinics Authority

  • General Acute Care Hospital
  • Madison, WI
  • NPI 1922043744

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1141084800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772582400000",
    "number": "1922074947",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9701 TRAPPERS TRL",
            "city": "MIDDLETON",
            "state": "WI",
            "postal_code": "535625061",
            "telephone_number": "608-203-6321"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9701 TRAPPERS TRL",
            "city": "MIDDLETON",
            "state": "WI",
            "postal_code": "535625061",
            "telephone_number": "608-203-6321"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TROST",
        "first_name": "GREGORY",
        "middle_name": "R",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-28",
        "last_updated": "2026-03-04",
        "certification_date": "2026-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "WI",
            "license": "30533",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katherine Rechner Tiefenthaler, AUD
• Brienna Lynn Tipler, PTA
• Total Health Chiropractic LLC
• Norbert F Toussaint, MD
• Transformations Surgery Center, Inc.
• Turning Leaf Counseling, LLC
• Eryka Lynn Uehling, OD
• Jennifer Ugur, LPC
• Josie M. Ullsperger, PHD
• University of Wisconsin Hospitals & Clinics Authority

• All providers in Middleton, WI
• Neurological Surgery Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 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.