Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Angela Nicole Williams

Behavior Technician in Darien, IL · enumerated 2026.

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

National Provider Identifier

1427991488

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Registry record

Entity type Individual (Type 1)

Name Angela Nicole Williams

Sex Female

Practice address 8201 Cass Ave, Darien, IL, 60561

Phone (630) 590-5571

Enumeration date Apr 13, 2026

Last updated in NPPES Apr 13, 2026

Taxonomy & licenses

106S00000X Behavior Technician Behavioral Health & Social Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Angela Williams?

Angela Williams is registered in NPPES with the primary taxonomy of Behavior Technician. 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 2026-04-13.