Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allergy Institute of San Antonio, P.A.

Medical Specialty Clinic/Center in Live Oak, TX · enumerated 2008 · authorized official Eliseo Villalobos, Owner.

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

National Provider Identifier

1659524163

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Registry record

Entity type Organization (Type 2)

Legal business name Allergy Institute of San Antonio, P.A.

Practice address 11515 Toepperwein Rd Ste 201, Live Oak, TX, 78233

Phone (210) 646-6978

Fax (855) 919-4370

Enumeration date Oct 28, 2008

Last updated in NPPES Nov 18, 2025

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians Secondary

261QM2500X Medical Specialty Clinic/Center Ambulatory Health Care Facilities · License L2042 (TX) Primary

Authorized official

Name Eliseo Villalobos

Title Owner

Phone (210) 722-0607

Other identifiers

Identifier	Type	State	Issuer
1659524163	Other	TX	ALLERGY INSTITUTE OF SAN ANTONIO
1760479935	Other	TX	ELISEO M VILLALOBOS

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 type of organization is Allergy Institute of San Antonio, P.A.?

Allergy Institute of San Antonio, P.A. is registered in NPPES as a Medical Specialty Clinic/Center (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Miguel Martinez Allergy & Immunology Physician · Live Oak, TX NPI 1013091586 Erica Garcia Nurse Practitioner · Live Oak, TX NPI 1063817849 Raul Villarreal Allergy & Immunology Physician · Live Oak, TX NPI 1083008908 Texas Allergy & Immunology Group Allergy & Immunology (Internal Medicine) Physician · Live Oak, TX NPI 1841163284

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-18.