Mary Thornsen

Primary specialty

Professional CounselorTaxonomy code 101YP2500X

License

6401018817 Issued in MI

Practice address

500 Cascade West Pkwy SE
Grand Rapids, MI 49546-2164

Phone

(616) 502-3480

NPI assigned

Dec 3, 2020

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in MI

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Mental Health Counselor

Education

Other, 2020

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Grand Rapids Therapy Group Inc

  • Psychologist
  • Grand Rapids, MI
  • NPI 1295211076
  Medicare reassignment NPD

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

{
    "created_epoch": "1606953600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788652800000",
    "number": "1033714308",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "17307 FRANKLIN AVE",
            "city": "SPRING LAKE",
            "state": "MI",
            "postal_code": "494561896",
            "telephone_number": "616-502-3480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 CASCADE WEST PKWY SE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495462164",
            "telephone_number": "616-502-3480"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THORNSEN",
        "first_name": "MARY",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-12-03",
        "last_updated": "2026-09-06",
        "certification_date": "2025-11-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "MI",
            "license": "6401018817",
            "primary": true
        },
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "MI",
            "license": "6401018817",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Thornburg, BCBA, LBA
• Cal David Thorne, LLC
• James Lee Thorne
• Judith Thorne, NP
• David E Thornsen, PSYD
• Catrice Morning Bird Thornton, LMT
• Clare Thornton
• Faith Thornton, LLMSW
• Kate Thornton, LMSW
• Savannah Thornton, LLMSW

• Professional Counselor in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Professional Counselor in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 6, 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.