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

Mr. Patrick J Grimm, PA-C

Physician Assistant in Hamilton, MT · enumerated 2005.

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

National Provider Identifier

1154318574

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Registry record

Entity type Individual (Type 1)

Name Mr. Patrick J Grimm

Credential PA-C

Sex Male

Practice address Hamilton, MT, 59840

Phone (406) 363-0597

Fax (406) 375-4858

Enumeration date Sep 30, 2005

Last updated in NPPES Nov 5, 2015

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

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 468 (MT) Primary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 468 (MT) Secondary

Other identifiers

Identifier	Type	State	Issuer
1154318574	Medicaid	ID	-
1154318574	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

How do I verify Patrick Grimm's NPI record?

Cross-check NPI 1154318574 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1154318574 active?

Yes, as of the latest NPPES snapshot, NPI 1154318574 is active (record last updated 2015-11-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-05.