What is Annette Williams's NPI number?

Annette Williams's National Provider Identifier (NPI) is 1780456822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Annette Williams's specialty?

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

Where is Annette Williams located?

Annette Williams's practice location on file with NPPES is 124 E 13th St Apt 14, Marysville, CA 95901-4939.

What is Annette Williams's phone number?

The practice phone number listed in the NPPES registry for Annette Williams is (916) 329-2868.

Is Annette Williams's NPI active?

Yes — Annette Williams's NPI (1780456822) is active in the NPPES registry as of the last update on 2025-11-07.

IndividualActive

Annette Williams

NPI 1780456822 · Behavior Analyst · Marysville, CA

Annette Williams is a Behavior Analyst provider in Marysville, CA (NPI 1780456822).

Provider details

NPI number: 1780456822
Entity type: Individual
Primary specialty: Behavior AnalystBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior AnalystPrimary103K00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(51/100 index)

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

Registry tenure38% of score
2 yrs in NPPES 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

124 E 13th St Apt 14

Marysville, CA 95901-4939

Phone: (916) 329-2868

Street-level locationGet directions

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Mailing address