What is Angela Williams's NPI number?

Angela Williams's National Provider Identifier (NPI) is 1427991488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Angela Williams's specialty?

Angela Williams is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Angela Williams located?

Angela Williams's practice location on file with NPPES is 8201 Cass Ave, Darien, IL 60561-5314.

What is Angela Williams's phone number?

The practice phone number listed in the NPPES registry for Angela Williams is (630) 590-5571.

Is Angela Williams's NPI active?

Yes — Angela Williams's NPI (1427991488) is active in the NPPES registry as of the last update on 2026-04-13.

IndividualActive

Angela Williams

NPI 1427991488 · Behavior Technician · Darien, IL

Angela Williams is a Behavior Technician provider in Darien, IL (NPI 1427991488).

Provider details

NPI number: 1427991488
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

8201 Cass Ave

Darien, IL 60561-5314

Phone: (630) 590-5571

Street-level locationGet directions

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Mailing address