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JUDITH DIAZ SIERRA
NPI 1891394151
Behavior Analyst in Walnut Creek, CA

Active since October 19, 2020
313 LENNON LN STE 100, WALNUT CREEK, CA 94598(925) 465-1585 Get Directions Write a Review

NPPES record last updated: October 19, 2020. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Judith Diaz Sierra NPPES

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

JUDITH DIAZ SIERRA (NPI 1891394151) is an individual behavior analyst provider in Walnut Creek, California and active in the NPI registry since October 2020.

NPPES Registry Identity

NPI1891394151
Entity TypeIndividualFemale
Primary Taxonomy103K00000X
Provider Legal NameJUDITH DIAZ SIERRA
Location Address313 LENNON LN STE 100Walnut Creek, CA 94598-2460
Mailing Address313 Lennon Ln Ste 100Walnut Creek, CA 94598-2460
Phone(925) 465-1585
Sole ProprietorNo
Enumeration DateOctober 19, 2020
NPPES CertifiedOctober 19, 2020
✔ NPI 1891394151 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.
313 LENNON LN STE 100, Walnut Creek, CA 94598
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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.

YARELI BANDA
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585
CLAUDIA DEL RIO
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585
MIGUEL AGUILAR
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585
JORGE BELL
Psychologist
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 289-1090
YVONNE MADRID BS
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 289-1090
VIKTORIIA VAVILOVA
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585
PARIS HAHN
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585
JENA N PHAN
Behavior Technician
313 LENNON LN STE 100
WALNUT CREEK, CA 94598
Contra Costa County (925) 465-1585

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 Judith Diaz Sierra's NPI number?

The NPI number for Judith Diaz Sierra is 1891394151. It was assigned to this individual provider in the NPPES registry on October 19, 2020.

Where is Judith Diaz Sierra located?

Judith Diaz Sierra practices at 313 Lennon Ln Ste 100, Walnut Creek, CA 94598. The listed phone number is (925) 465-1585.

What is Judith Diaz Sierra'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 Judith Diaz Sierra was last updated on October 19, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.