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

Dr. Leila Sevilla-Legacion Williams, DO

Family Medicine Physician in Austin, TX · enumerated 2005.

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

National Provider Identifier

1841281862

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Registry record

Entity type Individual (Type 1)

Name Dr. Leila Sevilla-Legacion Williams

Credential DO

Sex Female

Practice address Austin, TX, 78717

Phone (512) 528-7420

Fax (512) 528-7421

Enumeration date Oct 31, 2005

Last updated in NPPES Jul 6, 2010

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A7515 (CA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License L2752 (TX) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

How do I verify Leila Williams's NPI record?

Cross-check NPI 1841281862 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1841281862 active?

Yes, as of the latest NPPES snapshot, NPI 1841281862 is active (record last updated 2010-07-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-06.