Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Louise Hart, ARNP

Family Nurse Practitioner in Taholah, WA · enumerated 2008.

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

National Provider Identifier

1851563860

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Registry record

Entity type Individual (Type 1)

Name Mary Louise Hart

Credential ARNP

Sex Female

Practice address 1505 Kla-Ook-Wa Dr, Taholah, WA, 98587

Phone (360) 276-4405

Fax (360) 276-4474

Enumeration date Mar 31, 2008

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30004102 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
AP30004102	Other	WA	WA LICENSE

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 specialty is Mary Hart?

Mary Hart is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.