Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Athenia B Guerrero, O.T.

Occupational Therapist in Rancho Cucamonga, CA · enumerated 2007.

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

National Provider Identifier

1295954279

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Registry record

Entity type Individual (Type 1)

Name Mrs. Athenia B Guerrero

Credential O.T.

Sex Female

Practice address 8540 Archibald Ave, Suite D, Rancho Cucamonga, CA, 91730

Phone (909) 987-4242

Fax (909) 987-4277

Enumeration date Apr 25, 2007

Last updated in NPPES Jan 9, 2008

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OT3596 (CA) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT 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

Where does Athenia Guerrero practice?

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

What is the NPI number for Athenia Guerrero?

The National Provider Identifier (NPI) for Athenia Guerrero is 1295954279, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-09.