Annmarie Thiessen

Primary specialty

Mental Health CounselorTaxonomy code 101YM0800X

License

P129447 Issued in NY

Practice address

3 Forester Ave # 25
Warwick, NY 10990-1129

Phone

(845) 475-8422

NPI assigned

Feb 7, 2026

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other names 1

• Ann Thiessen Professional name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1770422400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770422400000",
    "number": "1437000130",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 FORESTER AVE # 25",
            "city": "WARWICK",
            "state": "NY",
            "postal_code": "109901129",
            "telephone_number": "845-475-8422"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3 FORESTER AVE # 25",
            "city": "WARWICK",
            "state": "NY",
            "postal_code": "109901129",
            "telephone_number": "845-475-8422"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "THIESSEN",
        "first_name": "ANNMARIE",
        "name_prefix": "Ms.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2026-02-07",
        "last_updated": "2026-02-07",
        "certification_date": "2026-02-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": "NY",
            "license": "P129447",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ANN",
            "last_name": "THIESSEN",
            "credential": "MHC",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

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• Mental Health Counselor in Warwick, NY
• Providers in Warwick, NY by specialty
• Mental Health Counselor in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.