Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Clarisa Yos, FNP

Nurse Practitioner in Riverside, CA · enumerated 2007.

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

National Provider Identifier

1265569743

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Registry record

Entity type Individual (Type 1)

Name Mrs. Clarisa Yos

Credential FNP

Sex Female

Practice address 4310 Orange St, Riverside, CA, 92501

Phone (951) 781-6335

Fax (951) 208-7244

Enumeration date Feb 28, 2007

Last updated in NPPES Nov 29, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN500928 (CA) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 10358 (CA) Primary

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

Clarisa Yos 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 2021-11-29.