Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Walkush, NP

Nurse Practitioner in Palo Alto, CA · enumerated 2014.

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

National Provider Identifier

1992112809

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Registry record

Entity type Individual (Type 1)

Name Ann Walkush

Credential NP

Sex Female

Practice address 725 Welch Rd, Palo Alto, CA, 94304

Phone (650) 497-8000

Enumeration date Jul 14, 2014

Last updated in NPPES Jan 21, 2022

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95002452 (CA) Primary

163W00000X Registered Nurse Nursing Service Providers · License 674144-1 (NY) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

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.

What specialty is Ann Walkush?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-21.