Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Adam Villalba, M.D.

Emergency Medicine Physician in Austin, TX · enumerated 2015.

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

National Provider Identifier

1750768248

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Registry record

Entity type Individual (Type 1)

Name Dr. Adam Villalba

Credential M.D.

Sex Male

Practice address 313 W 17th St Unit 2301, Austin, TX, 78701

Phone (915) 861-3634

Fax (512) 256-9848

Enumeration date May 4, 2015

Last updated in NPPES May 11, 2026

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License R5336 (TX) Primary

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

What specialty is Adam Villalba?

Adam Villalba is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-11.