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

Ms. Mary Walker, NP-C (ARNP)

Q: What is the NPI number for Mary Walker?

The National Provider Identifier (NPI) for Mary Walker is 1093727984, a Type 1 (individual) record in the CMS NPPES registry.

Family Nurse Practitioner in Knoxville, IA · enumerated 2006 · practices at Veterans Health Administration.

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

National Provider Identifier

1093727984

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Mary Walker

Credential NP-C (ARNP)

Sex Female

Practice address Knoxville, IA, 50138

Phone (641) 842-3101

Enumeration date Aug 12, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 059208 (IA) Primary

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 Mary Walker?

The National Provider Identifier (NPI) for Mary Walker is 1093727984, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Walker practice?

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

Other providers at this practice address

Browse all →

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