Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Grace Rebecca Larsen, ARNP

Q: What is the NPI number for Grace Larsen?

The National Provider Identifier (NPI) for Grace Larsen is 1891759411, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Brewster, WA · enumerated 2006.

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

National Provider Identifier

1891759411

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Registry record

Entity type Individual (Type 1)

Name Grace Rebecca Larsen

Credential ARNP

Sex Female

Practice address 418 Main St., Brewster, WA, 98812

Phone (509) 689-8900

Enumeration date Apr 12, 2006

Last updated in NPPES Jun 29, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30004121 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
0293307	Other	WA	L&I
1891759411	Medicaid	WA	-

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 Grace Larsen practice?

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

What is the NPI number for Grace Larsen?

The National Provider Identifier (NPI) for Grace Larsen is 1891759411, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-29.