Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SIERRA WILLIAMS
NPI 1093470908
Behavior Analyst in Tracy, CA

Q: What is Sierra Williams's NPI number?

The NPI number for Sierra Williams is 1093470908. It was assigned to this individual provider in the NPPES registry on November 4, 2021.

Q: What is Sierra Williams's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

Q: When was this NPI record last updated?

The NPPES record for Sierra Williams was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 04, 2021

510 WHISPERING WIND DR STE 110, TRACY, CA 95377(209) 832-7756 Get Directions Write a Review

NPPES record last updated: August 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 6, 2026, Mar 24, 2026, May 14, 2025 and 1 more (4 updates tracked since 2021).

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About Sierra Williams NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

SIERRA WILLIAMS (NPI 1093470908) is an individual behavior analyst provider in Tracy, California and active in the NPI registry since November 2021.

NPPES Registry Identity

NPI1093470908

Entity TypeIndividualFemale

Primary Taxonomy103K00000X

Provider Legal NameSIERRA WILLIAMS

Location Address510 WHISPERING WIND DR STE 110Tracy, CA 95377-8119

Mailing Address300 International Pkwy Ste 200Lake Mary, FL 32746-5028

Phone(209) 832-7756

Sole ProprietorNo

Enumeration DateNovember 4, 2021

Last NPPES UpdateAugust 6, 20264 updates tracked since enumeration

NPPES CertifiedAugust 6, 2026

✔ NPI 1093470908 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code103K00000X

Definition

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

Also ListedAssistant Behavior AnalystTaxonomy 106E00000X

Also ListedBehavior TechnicianTaxonomy 106S00000X

510 WHISPERING WIND DR STE 110, Tracy, CA 95377

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ROSA GARCIA

Behavior Technician