Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ernestine E Williams

Behavior Analyst in Las Vegas, NV · enumerated 2018.

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

National Provider Identifier

1063998482

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Registry record

Entity type Individual (Type 1)

Name Ernestine E Williams

Sex Female

Practice address 3660 N Rancho Dr Ste 113, Las Vegas, NV, 89130

Phone (702) 209-3544

Enumeration date Jul 18, 2018

Last updated in NPPES Oct 22, 2020

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 11830359 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

What specialty is Ernestine Williams?

Ernestine Williams is registered in NPPES with the primary taxonomy of Behavior Analyst. 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-22.