Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allen L Casteel, DENTURIST

Denturist in Great Falls, MT · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1235352121

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Registry record

Entity type Individual (Type 1)

Name Allen L Casteel

Credential DENTURIST

Sex Male

Practice address 215 Smelter Ave Ne Ste 3, Great Falls, MT, 59404

Phone (406) 216-4746

Fax (406) 216-4747

Enumeration date Apr 10, 2007

Last updated in NPPES Aug 4, 2026

Taxonomy & licenses

122400000X Denturist Dental Providers · License MT DENTURIST 22 (MT) Secondary

122400000X Denturist Dental Providers · License DEN-DTR-LIC22 (MT) Primary

Other identifiers

Identifier	Type	State	Issuer
0000030314	Other	MT	BCBS
0150178	Medicaid	MT	-
5512471	Other	MT	CHIP

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1235352121 active?

Yes, as of the latest NPPES snapshot, NPI 1235352121 is active (record last updated 2026-08-04).

How do I verify Allen Casteel's NPI record?

Cross-check NPI 1235352121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-04.