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WENDY MEJIA
NPI 1013686344
Social Worker - Clinical in Valencia, CA

Active since September 09, 2021PECOS Enrolled
23501 CINEMA DR STE 200, VALENCIA, CA 91355(661) 288-4800 Get Directions Write a Review

NPPES record last updated: June 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 7, 2023, Sep 23, 2022, Sep 9, 2021 (3 updates tracked since 2021).

About Wendy Mejia NPPES

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

WENDY MEJIA (NPI 1013686344) is an individual clinical provider in Valencia, California, licensed in California (139199) and active in the NPI registry since September 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2022).

NPPES Registry Identity

NPI1013686344
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameWENDY MEJIA
Location Address23501 CINEMA DR STE 200Valencia, CA 91355-5430
Mailing Address23501 Cinema Dr Ste 200Valencia, CA 91355-5430 · (661) 288-4800
Phone(661) 288-4800
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateSeptember 9, 2021
Last NPPES UpdateJune 12, 20263 updates tracked since enumeration
NPPES CertifiedJune 12, 2026
✔ NPI 1013686344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · 139199
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
23501 CINEMA DR STE 200, Valencia, CA 91355
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Wendy Mejia is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3870051444
PECOS Enrollment IDI20260814002037
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Wendy Mejia reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Los Angeles County Department Of Mental Health
Same address
Mental Health (Including Community Mental Health Center)
23501 CINEMA DR STE 200
Valencia, CA 91355
  • Reassigned Medicare billing, California enrollment
  • 533 clinicians in this Medicare group
NPI 1790718112 (661) 288-4800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91355 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $62.96 – $187.60
Typical copayment $0.00 (range $15.74 – $46.90)
Most-billed visit code NA
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

AMBER NOEMI CORDERO CASTILLO
Student in an Organized Health Care Education/Training Program
23501 CINEMA DR STE 200
SANTA CLARITA, CA 91355
Los Angeles County (661) 288-4800
LYDIA MADELEINE NELSON MD
Psychiatry & Neurology (Psychiatry)
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4800
MONICA ALEXANDRA ESCALANTE RN
Registered Nurse (Psychiatric/Mental Health)
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4800
NOEMY PEREZ
Case Manager/Care Coordinator
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4800
ALEXANDRA ADAME
Social Worker (Clinical)
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4800
MR. CHRIS ROBERT LONG
Day Training/Habilitation Specialist
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4800
NOAH KULALA
Social Worker (Clinical)
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (661) 288-4837
DR. RICHARD KENDALL PSYD
Psychologist (Forensic)
23501 CINEMA DR STE 200
VALENCIA, CA 91355
Los Angeles County (805) 610-2370

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 Wendy Mejia's NPI number?

The NPI number for Wendy Mejia is 1013686344. It was assigned to this individual provider in the NPPES registry on September 9, 2021.

Where is Wendy Mejia located?

Wendy Mejia practices at 23501 Cinema Dr Ste 200, Valencia, CA 91355. The listed phone number is (661) 288-4800.

What is Wendy Mejia's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Wendy Mejia enrolled in Medicare?

Yes. Wendy Mejia is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Wendy Mejia's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wendy Mejia reassigns Medicare benefits to Los Angeles County Department Of Mental Health (Valencia, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Wendy Mejia's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Wendy Mejia was last updated on June 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.