NPIMap

Individual provider Active NPI

Clancy Joyce Hartman, FNP-C

  • Family Nurse Practitioner
  • Lewistown, MT
National Provider Identifier
1235818535
Registry record updated Dec 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
217113 Issued in MT
Practice address
311 W Main St
Lewistown, MT 59457-2760
Phone
(406) 535-6545
NPI assigned
Jul 13, 2023
Last updated
Dec 5, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 5, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X 217113 MT Primary

Addresses

Primary practice location

311 W Main St
Lewistown, MT 59457-2760

Mailing address

311 W Main St
Lewistown, MT 59457-2760
Phone (406) 535-6545

Other practice location 1

300 1st Ave N Ste 202
Lewistown, MT 59457-1700
Phone (406) 535-8811

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MT
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20230831001457 MT Practitioner - Nurse Practitioner 2062875578 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

311 W Main St
Lewistown, MT 59457-2770
Phone (406) 535-6545

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
217113MTMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Bighorn Valley Health Center Incorporated Current Accepting new patients
Bighorn Valley Health Center Incorporated CurrentSince Sep 2, 2023 Accepting new patients
Bighorn Valley Health Center, Incorporated CurrentSince Sep 2, 2023 Accepting new patients
Bighorn Valley Health Center, Incorporated PastSince May 7, 2024 Accepting new patients
Fergus County Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center Incorporated Past Accepting new patients
Bighorn Valley Health Center Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center, Incorporated Past Accepting new patients
Bighorn Valley Health Center Incorporated Past Accepting new patients

Locations

112 St. Labre Campus Dr
Ashland, MT 59003
Phone (406) 784-2346

19 E Main St
Belgrade, MT 59714
Phone (406) 922-0820

410 Triple Crown St
Rm A108
Belgrade, MT 59714
Phone (406) 388-3311

1695 Tschache Ln
Bozeman, MT 59715
Phone (406) 585-1360

1515 W Bell St
Ste 15
Glendive, MT 59330
Phone (406) 815-5831

300 College Dr
Glendive, MT 59330
Phone (406) 377-9410

10 4th St W
Ste B
Hardin, MT 59034
Phone (406) 237-5845

1223 N Center Ave
Hardin, MT 59034
Phone (406) 665-4103

16 N Miles Ave
Ste 101
Hardin, MT 59034
Phone (406) 237-8270

721 N Miles Ave
Hardin, MT 59034
Phone (406) 665-4103

207 W Main St
Ste 5
Lewistown, MT 59457
Phone (406) 968-0172

311 W Main St
Lewistown, MT 59457
Phone (406) 535-6545

112 W Lewis St
Livingston, MT 59047
Phone (406) 222-1111

305 S 4th St
Miles City, MT 59301
Phone (406) 234-4724

601 Main St
Miles City, MT 59301
Phone (406) 874-8700

Interoperability endpoints

  • Direct secure messaging: clancy.hartman.1@16708.direct.athenahealth.com

Organizations & group practices 17

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

View all 17

Hospital & facility affiliations 10

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

NPI Registry JSON

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

{
    "created_epoch": "1689206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764892800000",
    "number": "1235818535",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "311 W MAIN ST",
            "city": "LEWISTOWN",
            "state": "MT",
            "postal_code": "594572760",
            "telephone_number": "406-535-6545"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "311 W MAIN ST",
            "city": "LEWISTOWN",
            "state": "MT",
            "postal_code": "594572760",
            "telephone_number": "406-535-6545"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 1st Ave N Ste 202",
            "address_purpose": "LOCATION",
            "city": "Lewistown",
            "state": "MT",
            "postal_code": "594571700",
            "country_code": "US",
            "telephone_number": "406-535-8811",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HARTMAN",
        "first_name": "CLANCY",
        "middle_name": "JOYCE",
        "name_prefix": "Mrs.",
        "credential": "FNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-07-13",
        "last_updated": "2025-12-05",
        "certification_date": "2025-12-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MT",
            "license": "217113",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Lewistown, MT

Sources for this page

Verify at the official NPI Registry.