Thelma C Mathison, RN

Primary specialty

Registered NurseTaxonomy code 163W00000X

License

N35391 Issued in NY

Practice address

650 State St
Watertown, NY 13601-2839

Phone

(315) 755-1251

Fax

(518) 291-6601

NPI assigned

Jun 30, 2025

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Registered Nurse

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.

• Citizen Advocates, Inc

  • Substance Use Disorder Rehabilitation Clinic/Center
  • Malone, NY
  • NPI 1780619064
  NPD

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

{
    "created_epoch": "1751241600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774915200000",
    "number": "1710876305",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "324 COUNTY ROUTE 51 BLDG 1",
            "city": "MALONE",
            "state": "NY",
            "postal_code": "129534502",
            "telephone_number": "518-651-2302"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "650 STATE ST",
            "city": "WATERTOWN",
            "state": "NY",
            "postal_code": "136012839",
            "telephone_number": "315-755-1251",
            "fax_number": "518-291-6601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MATHISON",
        "first_name": "THELMA",
        "middle_name": "C",
        "credential": "RN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-06-30",
        "last_updated": "2026-03-31",
        "certification_date": "2026-03-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "NY",
            "license": "N35391",
            "primary": true
        },
        {
            "code": "164W00000X",
            "taxonomy_group": "",
            "desc": "Licensed Practical Nurse",
            "state": "NY",
            "license": "334092",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sharon Margaret Martin
• Massey'S Furniture Barn, Inc.
• Richard A Matarese, MD
• Katherine Emily Matas, PHD, APRN, BC
• Elizabeth Mathew, MD
• Marcia Mauger, MD
• Tomm L Maxon, D.C.
• Matthew Dean Maynard, DO
• Johnda E Mayne, LMSW
• Ines Magali Mbami, PHARMD

• Registered Nurse in Watertown, NY
• Providers in Watertown, NY by specialty
• Registered Nurse in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 31, 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.