Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael P Gruber, MD

Critical Care Medicine (Internal Medicine) Physician in Bozeman, MT · enumerated 2006.

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

National Provider Identifier

1578671699

Verified

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Registry record

Entity type Individual (Type 1)

Name Michael P Gruber

Credential MD

Sex Male

Practice address 915 Highland Blvd, Bozeman, MT, 59715

Phone (406) 414-5000

Enumeration date Aug 28, 2006

Last updated in NPPES Nov 6, 2025

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 40529 (CO) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 159933 (MT) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 159933 (MT) Primary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 40529 (CO) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
37132547	Medicaid	CO	-

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 Michael Gruber practice?

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

What is the NPI number for Michael Gruber?

The National Provider Identifier (NPI) for Michael Gruber is 1578671699, 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 2025-11-06.