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

CRISTAL DIRZO ASW
NPI 1285493478
Social Worker in Upland, CA

Q: What is Cristal Dirzo's NPI number?

The NPI number for Cristal Dirzo is 1285493478. It was assigned to this individual provider in the NPPES registry on March 18, 2024.

Q: What is Cristal Dirzo's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Q: When was this NPI record last updated?

The NPPES record for Cristal Dirzo was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since March 18, 2024

1425 W FOOTHILL BLVD STE 201, UPLAND, CA 91786(877) 527-7227 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Sep 3, 2026, Aug 20, 2024 (2 updates tracked since 2024).

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About Cristal Dirzo Asw NPPES

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

CRISTAL DIRZO ASW (NPI 1285493478) is an individual social worker in Upland, California, licensed in California (ASW139911) and active in the NPI registry since March 2024.

NPPES Registry Identity

NPI1285493478

Entity TypeIndividualFemale

Primary Taxonomy104100000X

Provider Legal NameCRISTAL DIRZOCredential: ASW

Location Address1425 W FOOTHILL BLVD STE 201Upland, CA 91786-3637

Mailing Address25910 Acero Ste 160Mission Viejo, CA 92691-2777 · (877) 527-7227

Phone(877) 527-7227

Sole ProprietorNo

Enumeration DateMarch 18, 2024

Last NPPES UpdateSeptember 3, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 3, 2026

✔ NPI 1285493478 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers

Taxonomy Code104100000X

License✔ Licensed in CA · ASW139911

Definition

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

1425 W FOOTHILL BLVD STE 201, Upland, CA 91786

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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.

SOUTH COAST CHILDREN'S SOCIETY, INC.

Community/Behavioral Health