Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Maria Josefina Williams, CNA

Nurse's Aide in San Antonio, TX · enumerated 2018.

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

National Provider Identifier

1972078137

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Registry record

Entity type Individual (Type 1)

Name Mrs. Maria Josefina Williams

Credential CNA

Sex Female

Practice address 7710 W Interstate 10, San Antonio, TX, 78230

Phone (210) 377-3355

Enumeration date Oct 3, 2018

Last updated in NPPES Oct 3, 2018

Taxonomy & licenses

376K00000X Nurse's Aide Nursing Service Related Providers · License NA0060017022 (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.

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Frequently asked questions

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.

What specialty is Maria Williams?

Maria Williams is registered in NPPES with the primary taxonomy of Nurse's Aide. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-03.