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MARISSA M DIAZ LCSW, PPSC
NPI 1902579030
Social Worker - School in Garden Grove, CA

Active since July 26, 2021
10331 STANFORD AVE, GARDEN GROVE, CA 92840(714) 663-6000 Get Directions Write a Review

NPPES record last updated: May 18, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 18, 2026, Jul 26, 2021 (2 updates tracked since 2021).

About Marissa M Diaz Lcsw, Ppsc NPPES

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

MARISSA M DIAZ LCSW, PPSC (NPI 1902579030) is an individual school provider in Garden Grove, California, licensed in California (122024) and active in the NPI registry since July 2021. She maintains 4 additional practice locations.

NPPES Registry Identity

NPI1902579030
Entity TypeIndividualFemale
Primary Taxonomy1041S0200X
Provider Legal NameMARISSA M DIAZCredential: LCSW, PPSC
Location Address10331 STANFORD AVEGarden Grove, CA 92840-6351
Mailing Address10331 Stanford AveGarden Grove, CA 92840-6351 · (714) 663-6000
Phone(714) 663-6000
Sole ProprietorNo
Enumeration DateJuly 26, 2021
Last NPPES UpdateMay 18, 20262 updates tracked since enumeration
NPPES CertifiedMay 18, 2026
✔ NPI 1902579030 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · SchoolBehavioral Health & Social Service Providers
Taxonomy Code1041S0200X
License✔ Licensed in CA · 122024
10331 STANFORD AVE, Garden Grove, CA 92840
Open in Google Maps ↗

Secondary Practice Locations 4

Location 11100B N Tustin Ave Ste ASanta Ana, CA 92705-3505 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 2947 S Anaheim Blvd Ste 260Anaheim, CA 92805-5591 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 31 Hope DrTustin, CA 92782-0221 · Phone (714) 247-0300 · Fax (714) 259-1598
Location 414642 Newport Ave Ste 200Tustin, CA 92780-6058 · Phone (714) 247-0300 · Fax (714) 259-1598

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.

ANA MARIA MORA
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
JESSICA DINH LCSW
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
MRS. GIULIANA VALDOVINOS LCSW
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
CASEY JONES
Psychologist (Clinical Child & Adolescent)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
NICOLE GLEESON LCSW
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
BRIANNA MARIE WRIGHT
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 630-6000
DAVID MORENO GUARDADO
Social Worker (School)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000
CELESTE RAMIREZ
Social Worker (Clinical)
10331 STANFORD AVE
GARDEN GROVE, CA 92840
Orange County (714) 663-6000

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 Marissa Diaz's NPI number?

The NPI number for Marissa Diaz is 1902579030. It was assigned to this individual provider in the NPPES registry on July 26, 2021.

Where is Marissa Diaz located?

Marissa Diaz practices at 10331 Stanford Ave, Garden Grove, CA 92840. The listed phone number is (714) 663-6000.

What is Marissa Diaz's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in School, with taxonomy code 1041S0200X.

When was this NPI record last updated?

The NPPES record for Marissa Diaz was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.