Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael S. Brown, M.D.

Anatomic Pathology & Clinical Pathology Physician in Billings, MT · enumerated 2005.

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

National Provider Identifier

1639171713

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael S. Brown

Credential M.D.

Sex Male

Practice address 2900 12th Ave N, Ste 295w, Billings, MT, 59101

Phone (406) 238-6360

Fax (406) 238-6361

Enumeration date Jun 2, 2005

Last updated in NPPES Sep 4, 2008

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 9600 (MT) Primary

207ZP0007X Molecular Genetic Pathology (Pathology) Physician Allopathic & Osteopathic Physicians · License 9600 (MT) 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
26845	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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Brown?

Michael Brown is registered in NPPES with the primary taxonomy of Anatomic Pathology & Clinical Pathology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-04.