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

Marcus Thune

Q: What is the NPI number for Marcus Thune?

The National Provider Identifier (NPI) for Marcus Thune is 1639743396, a Type 1 (individual) record in the CMS NPPES registry.

Occupational Therapist in Great Falls, MT · enumerated 2021.

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

National Provider Identifier

1639743396

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Registry record

Entity type Individual (Type 1)

Name Marcus Thune

Sex Male

Practice address Great Falls, MT, 59405

Phone (406) 455-5903

Enumeration date May 18, 2021

Last updated in NPPES Mar 15, 2023

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

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Primary

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

What is the NPI number for Marcus Thune?

The National Provider Identifier (NPI) for Marcus Thune is 1639743396, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marcus Thune practice?

The practice location on file with NPPES is in Great Falls, MT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-15.