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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Grant Arthur Olson, DENTURIST

Denturist in Billings, MT · enumerated 2006.

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

National Provider Identifier

1376607663

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Registry record

Entity type Individual (Type 1)
Name Mr. Grant Arthur Olson
Credential DENTURIST
Sex Male
Practice address Billings, MT, 59102
Phone (406) 245-4884
Fax (406) 245-2587
Enumeration date Dec 20, 2006
Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122400000X Denturist Dental Providers · License 021 (MT) Primary

Other identifiers

Identifier Type State Issuer
0150229 Medicaid MT -

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.

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Frequently asked questions

Where does Grant Olson practice?
The practice location on file with NPPES is in Billings, MT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Grant Olson?
The National Provider Identifier (NPI) for Grant Olson is 1376607663, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.