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JULIAN JJ WARREN WILLIAMS SR.
NPI 1043017825
Behavior Analyst in Castro Valley, CA

Active since February 27, 2025
19772 STANTON AVE, CASTRO VALLEY, CA 94546(510) 586-3117 Get Directions Write a Review

NPPES record last updated: February 27, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Julian Jj Warren Williams Sr. NPPES

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

JULIAN JJ WARREN WILLIAMS SR. (NPI 1043017825) is an individual behavior analyst provider in Castro Valley, California and active in the NPI registry since February 2025.

NPPES Registry Identity

NPI1043017825
Entity TypeIndividualMale
Primary Taxonomy103K00000X
Provider Legal NameJULIAN JJ WARREN WILLIAMS SR.
Location Address19772 STANTON AVECastro Valley, CA 94546-4072
Mailing Address3186 Airway Ave Ste ACosta Mesa, CA 92626-4650 · (714) 881-0427 · Fax (714) 327-0673
Phone(510) 586-3117
Sole ProprietorYes
Enumeration DateFebruary 27, 2025
NPPES CertifiedFebruary 27, 2025
✔ NPI 1043017825 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
19772 STANTON AVE, Castro Valley, CA 94546
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Julian Williams's NPI number?

The NPI number for Julian Williams is 1043017825. It was assigned to this individual provider in the NPPES registry on February 27, 2025.

Where is Julian Williams located?

Julian Williams practices at 19772 Stanton Ave, Castro Valley, CA 94546. The listed phone number is (510) 586-3117.

What is Julian Williams's specialty?

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

When was this NPI record last updated?

The NPPES record for Julian Williams was last updated on February 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.