Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Carlos A Guerrero, FNP

Family Nurse Practitioner in Lancaster, CA · enumerated 2006.

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

National Provider Identifier

1699855080

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Carlos A Guerrero

Credential FNP

Sex Male

Practice address 44725 10th St W Ste 220, Lancaster, CA, 93534

Phone (661) 726-3750

Fax (661) 726-5013

Enumeration date Oct 17, 2006

Last updated in NPPES Feb 11, 2025

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA9118623 (FL) Secondary

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA14013 (CA) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP 8934 (CA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP credential

Other identifiers

Identifier	Type	State	Issuer
NP 8934	Other	CA	FNP CERTIFICATE
PA9118623	Other	FL	PA-C LICENSE
PA-C 14013	Other	CA	PA-C CERTIFICATE
RN 475753	Other	CA	RN 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 Carlos Guerrero?

Carlos Guerrero 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-11.