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

Joseph Anthony Villanueva, NP

Nurse Practitioner in Downey, CA · enumerated 2014 · practices at County of Los Angeles.

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

National Provider Identifier

1104230259

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Joseph Anthony Villanueva

Credential NP

Sex Male

Practice address Downey, CA, 90242

Phone (562) 401-7963

Fax (562) 401-7604

Enumeration date Jun 17, 2014

Last updated in NPPES Jun 15, 2015

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

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 23460 (CA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 NPI 1104230259 active?

Yes, as of the latest NPPES snapshot, NPI 1104230259 is active (record last updated 2015-06-15).

How do I verify Joseph Villanueva's NPI record?

Cross-check NPI 1104230259 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-15.