Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mrs. Ceferina A Arenaza I

Nurse's Aide in Haymarket, VA · enumerated 2023.

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

National Provider Identifier

1225818420

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Registry record

Entity type Individual (Type 1)

Name Mrs. Ceferina A Arenaza I

Sex Female

Practice address Haymarket, VA, 20169

Phone (703) 835-7320

Enumeration date Oct 4, 2023

Last updated in NPPES Oct 4, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

376K00000X Nurse's Aide Nursing Service Related Providers 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 is the NPI number for Ceferina Arenaza?

The National Provider Identifier (NPI) for Ceferina Arenaza is 1225818420, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ceferina Arenaza practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-04.