Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter J. Arosemena, M.D.

Family Medicine Physician in Poplar, MT · enumerated 2006.

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

National Provider Identifier

1265532907

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Registry record

Entity type Individual (Type 1)

Name Peter J. Arosemena

Credential M.D.

Sex Male

Practice address 107 H. St. East, 550 6th Ave. No, Poplar, MT, 59255

Phone (406) 768-3491

Fax (406) 768-7432

Enumeration date Sep 23, 2006

Last updated in NPPES Aug 7, 2007

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License M-5935 (ID) Primary

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
M-5935	Other	ID	IDAHO STATE BOARD
2210068	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1265532907 active?

Yes, as of the latest NPPES snapshot, NPI 1265532907 is active (record last updated 2007-08-07).

How do I verify Peter Arosemena's NPI record?

Cross-check NPI 1265532907 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-07.