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

Mrs. Margaret Ann White, R.N.

Registered Nurse in Lame Deer, MT · enumerated 2008.

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

National Provider Identifier

1255584918

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Registry record

Entity type Individual (Type 1)

Name Mrs. Margaret Ann White

Credential R.N.

Sex Female

Practice address Lame Deer, MT, 59043

Phone (406) 477-4400

Enumeration date Oct 28, 2008

Last updated in NPPES Oct 28, 2008

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 23590 (MT) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

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 Margaret White?

The National Provider Identifier (NPI) for Margaret White is 1255584918, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret White practice?

The practice location on file with NPPES is in Lame Deer, 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 2008-10-28.