Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marilyn Austin-Clark

Family Nurse Practitioner in Guthrie, OK · enumerated 2015.

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

National Provider Identifier

1164819504

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Registry record

Entity type Individual (Type 1)

Name Marilyn Austin-Clark

Sex Female

Practice address 624 E Noble Ave, Guthrie, OK, 73044

Phone (405) 471-4914

Enumeration date Apr 23, 2015

Last updated in NPPES Sep 22, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 81876 (OK) Primary

Other identifiers

Identifier	Type	State	Issuer
12150625001972	Medicaid	OK	-

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 Marilyn Austin-Clark?

The National Provider Identifier (NPI) for Marilyn Austin-Clark is 1164819504, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marilyn Austin-Clark practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-22.