Individual provider Active NPI

Mary Elaine Fitzpatrick, PHD

  • Addiction (Substance Use Disorder) Counselor
  • Billings, MT
National Provider Identifier
1891858627
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Addiction (Substance Use Disorder) CounselorTaxonomy code 101YA0400X
License
515 Issued in MT
Practice address
631 Clark Ave
Billings, MT 59101-1614
Phone
(406) 252-3851
Fax
(206) 203-3569
NPI assigned
Dec 19, 2006
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Addiction (Substance Use Disorder) Counselor 101YA0400X 515 MT Primary
Professional Counselor 101YP2500X 46 MT

Addresses

Primary practice location

631 Clark Ave
Billings, MT 59101-1614

Mailing address

PO Box 22931
Billings, MT 59104-2931
Phone (406) 252-3851

Other identifiers 1

IdentifierTypeStateIssuer
252213MedicaidMT

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
Credentials
Doctor of Philosophy

State licenses

LicenseStateTypeSpecialty
515MTMDAddiction (Substance Use Disorder) Counselor
46MTMDProfessional Counselor

NPI Registry JSON

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

{
    "created_epoch": "1166486400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1891858627",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 22931",
            "city": "BILLINGS",
            "state": "MT",
            "postal_code": "591042931",
            "telephone_number": "406-252-3851",
            "fax_number": "206-203-3569"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "631 CLARK AVE",
            "city": "BILLINGS",
            "state": "MT",
            "postal_code": "591011614",
            "telephone_number": "406-252-3851",
            "fax_number": "206-203-3569"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FITZPATRICK",
        "first_name": "MARY",
        "middle_name": "ELAINE",
        "name_prefix": "Dr.",
        "credential": "PHD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2006-12-19",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "MT",
            "license": "515",
            "primary": true
        },
        {
            "code": "101YP2500X",
            "taxonomy_group": "",
            "desc": "Counselor, Professional",
            "state": "MT",
            "license": "46",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "252213",
            "state": "MT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Billings, MT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.