NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mariah Mitman, OD

Optometrist in Hamilton, MT · enumerated 2018 · practices at Beyer Big Sky Optical, Inc.

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

National Provider Identifier

1366938771

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mariah Mitman
Credential OD
Sex Female
Practice address 820 W Main St, Hamilton, MT, 59840
Enumeration date Jul 9, 2018
Last updated in NPPES Jul 26, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1016 (NV) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License 3373 (MT) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
1366938771 Medicaid NV -

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

Where does Mariah Mitman practice?
The practice location on file with NPPES is in Hamilton, MT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mariah Mitman?
The National Provider Identifier (NPI) for Mariah Mitman is 1366938771, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-26.