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

ELEN JOIE MERCADO MS, BCBA
NPI 1255873808
Behavior Analyst in West Covina, CA

Active since November 14, 2016
1521 W CAMERON AVE STE 250, WEST COVINA, CA 91790(626) 231-0502(626) 407-4779 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 27, 2026, Mar 3, 2020, Nov 21, 2016 and 1 more (4 updates tracked since 2016).

About Elen Joie Mercado Ms, Bcba NPPES

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

ELEN JOIE MERCADO MS, BCBA (NPI 1255873808) is an individual behavior analyst provider in West Covina, California, licensed in California (1-26-90953) and active in the NPI registry since November 2016.

NPPES Registry Identity

NPI1255873808
Entity TypeIndividualFemale
Primary Taxonomy103K00000X
Provider Legal NameELEN JOIE MERCADOCredential: MS, BCBA
Location Address1521 W CAMERON AVE STE 250West Covina, CA 91790-2738
Mailing Address1521 W Cameron Ave Ste 250West Covina, CA 91790-2738 · (626) 231-0502 · Fax (626) 407-4779
Phone(626) 231-0502
Fax(626) 407-4779
Sole ProprietorNo
Enumeration DateNovember 14, 2016
Last NPPES UpdateJuly 27, 20264 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1255873808 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers
Taxonomy Code103K00000X
License✔ Licensed in CA · 1-26-90953
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 ListedCounselor · Mental HealthTaxonomy 101YM0800X
1521 W CAMERON AVE STE 250, West Covina, CA 91790
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Other Providers at the Same Location NPPES

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

JACOB VALENCIA MS
Behavior Technician
1521 W CAMERON AVE STE 250
WEST COVINA, CA 91790
Los Angeles County (626) 231-0502

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 Elen Joie Mercado's NPI number?

The NPI number for Elen Joie Mercado is 1255873808. It was assigned to this individual provider in the NPPES registry on November 14, 2016.

Where is Elen Joie Mercado located?

Elen Joie Mercado practices at 1521 W Cameron Ave Ste 250, West Covina, CA 91790. The listed phone number is (626) 231-0502.

What is Elen Joie Mercado'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 Elen Joie Mercado was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.