Allen L Casteel, DENTURIST

Primary specialty

DenturistTaxonomy code 122400000X

License

DEN-DTR-LIC22 Issued in MT

Practice address

215 Smelter Ave NE Ste 3
Great Falls, MT 59404-1937

Phone

(406) 216-4746

Fax

(406) 216-4747

NPI assigned

Apr 10, 2007

Last updated

Aug 4, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

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.

• First Impressions Denture Clinic LLC

  • Denturist
  • Great Falls, MT
  • NPI 1457430118
  NPD (past) Authorized official

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

{
    "created_epoch": "1176163200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785801600000",
    "number": "1235352121",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "215 SMELTER AVE NE STE 3",
            "city": "GREAT FALLS",
            "state": "MT",
            "postal_code": "594041937",
            "telephone_number": "406-216-4746",
            "fax_number": "406-216-4747"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "215 SMELTER AVE NE STE 3",
            "city": "GREAT FALLS",
            "state": "MT",
            "postal_code": "594041937",
            "telephone_number": "406-216-4746",
            "fax_number": "406-216-4747"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASTEEL",
        "first_name": "ALLEN",
        "middle_name": "L",
        "credential": "DENTURIST",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-10",
        "last_updated": "2026-08-04",
        "certification_date": "2026-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122400000X",
            "taxonomy_group": "",
            "desc": "Denturist",
            "state": "MT",
            "license": "MT DENTURIST 22",
            "primary": false
        },
        {
            "code": "122400000X",
            "taxonomy_group": "",
            "desc": "Denturist",
            "state": "MT",
            "license": "DEN-DTR-LIC22",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "0000030314",
            "state": "MT"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0150178",
            "state": "MT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CHIP",
            "identifier": "5512471",
            "state": "MT"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Cascade Eyecare Inc (Cascade Opticians)
• Cascade Family Dentistry PLLC
• Cascade Hearing and Audiology LLC
• Angela Casmier, M.D.
• Michael Charles Cassidy, MA, LAC
• Robin Rae Castle, LCPC
• Jorge Luis Castriz, M.D.
• Stephanie L Catron, FNP
• Caitlyn Cayer
• Shirley Sue Cayko, LCSW

• Denturist in Great Falls, MT
• Providers in Great Falls, MT by specialty
• Denturist in Montana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 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.