Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Carmen Guadalupe Walker, NURSE PRACTITIONER

Nurse Practitioner in Orange, CA · enumerated 2010.

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

National Provider Identifier

1699098608

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Registry record

Entity type Individual (Type 1)

Name Ms. Carmen Guadalupe Walker

Credential NURSE PRACTITIONER

Sex Female

Practice address 1000 W La Veta Ave, Orange, CA, 92868

Phone (714) 734-6200

Fax (714) 734-6231

Enumeration date Mar 4, 2010

Last updated in NPPES Mar 4, 2010

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 18564 (CA) 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 specialty is Carmen Walker?

Carmen Walker 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.

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 2010-03-04.