Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Esai Omar Fonseca, PA-C

Physician Assistant in Weslaco, TX · enumerated 2023.

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

National Provider Identifier

1508558271

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Registry record

Entity type Individual (Type 1)

Name Esai Omar Fonseca

Credential PA-C

Sex Male

Practice address 1010 James St, Weslaco, TX, 78596

Phone (956) 968-1621

Enumeration date May 22, 2023

Last updated in NPPES Mar 23, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA20052 (TX) 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

Is NPI 1508558271 active?

Yes, as of the latest NPPES snapshot, NPI 1508558271 is active (record last updated 2026-03-23).

How do I verify Esai Fonseca's NPI record?

Cross-check NPI 1508558271 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-23.