Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alison Unzeitig Barron, MD

Surgical Oncology Physician in San Antonio, TX · enumerated 2012.

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

National Provider Identifier

1790041085

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Registry record

Entity type Individual (Type 1)

Name Alison Unzeitig Barron

Credential MD

Sex Female

Practice address 18707 Hardy Oak Blvd Ste 320, San Antonio, TX, 78258

Phone (210) 277-6255

Fax (210) 277-6256

Enumeration date Apr 11, 2012

Last updated in NPPES Sep 18, 2023

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 61965 (MN) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License R6971 (TX) Secondary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License R6971 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
390718001	Medicaid	TX	-
390718002	Medicaid	TX	-

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 1790041085 active?

Yes, as of the latest NPPES snapshot, NPI 1790041085 is active (record last updated 2023-09-18).

How do I verify Alison Barron's NPI record?

Cross-check NPI 1790041085 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 2023-09-18.