DAVID MERCIER LCSW
NPI 1245859420
Social Worker - Clinical in Cerritos, CA

Q: What is David Mercier's NPI number?

The NPI number for David Mercier is 1245859420. It was assigned to this individual provider in the NPPES registry on April 8, 2020.

Q: What is David Mercier's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for David Mercier was last updated on December 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since April 08, 2020PECOS Enrolled

10802 COLLEGE PL, CERRITOS, CA 90703(562) 924-9581 Get Directions Write a Review

NPPES record last updated: December 1, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 1, 2021, Apr 8, 2020 (2 updates tracked since 2020).

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About David Mercier Lcsw NPPES

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

DAVID MERCIER LCSW (NPI 1245859420) is an individual clinical provider in Cerritos, California, licensed in California (93186) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1245859420

Entity TypeIndividualMale

Primary Taxonomy1041C0700X

Provider Legal NameDAVID MERCIERCredential: LCSW

Location Address10802 COLLEGE PLCerritos, CA 90703-1505

Mailing Address1534 N Stallion StOrange, CA 92869-1740 · Fax (714) 697-4985

Phone(562) 924-9581

Sole ProprietorNo

Enumeration DateApril 8, 2020

Last NPPES UpdateDecember 1, 20212 updates tracked since enumeration

NPPES CertifiedApril 8, 2020

✔ NPI 1245859420 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in CA · 93186

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.

10802 COLLEGE PL, Cerritos, CA 90703

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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)

David Mercier Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 David Mercier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group

2.1 mi

Health Maintenance Organization

9400 ROSECRANS AVE
Bellflower, CA 90706

Reassigned Medicare billing, California enrollment
13,921 clinicians in this Medicare group

NPI 1043242555 (562) 461-3000

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 90703 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.

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