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MRS. CHELSEA OLIVAR LCSW
NPI 1780156638
Social Worker - Clinical in Orange, CA

Active since December 17, 2018
1100 W TOWN AND COUNTRY RD STE 1250, ORANGE, CA 92868(714) 543-5437 Get Directions Write a Review

NPPES record last updated: September 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 12, 2025, Dec 17, 2018 (2 updates tracked since 2018).

About Mrs. Chelsea Olivar Lcsw NPPES

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

MRS. CHELSEA OLIVAR LCSW (NPI 1780156638) is an individual clinical provider in Orange, California, licensed in California (84709) and active in the NPI registry since December 2018.

NPPES Registry Identity

NPI1780156638
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. CHELSEA OLIVARCredential: LCSW
Location Address1100 W TOWN AND COUNTRY RD STE 1250Orange, CA 92868-4633
Mailing Address10408 Calle Chulita NwAlbuquerque, NM 87114-5367 · (714) 323-4512
Phone(714) 543-5437
Sole ProprietorNo
Enumeration DateDecember 17, 2018
Last NPPES UpdateSeptember 12, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 12, 2025
✔ NPI 1780156638 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 · 84709
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.

Other Names 1

Former Name (1)Chelsea De Carvalho Fonseca

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.

DANIEL KWON
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (844) 669-7827
BERENICE PLASCENCIA
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556
BRENDA KIM TRAN
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556
KELLIE A RIEGER NONE
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556
ELIZABETH VERONICA ALTAMIRANO
Marriage & Family Therapist
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (657) 339-2799
MERA HABIB
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556
MIA SCHERRER
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556
FRAXINE DILLAGUE
Behavior Technician
1100 W TOWN AND COUNTRY RD STE 1250
ORANGE, CA 92868
Orange County (949) 357-2556

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 Chelsea Olivar's NPI number?

The NPI number for Chelsea Olivar is 1780156638. It was assigned to this individual provider in the NPPES registry on December 17, 2018. The provider is also known as Chelsea De Carvalho Fonseca.

Where is Chelsea Olivar located?

Chelsea Olivar practices at 1100 W Town And Country Rd Ste 1250, Orange, CA 92868. The listed phone number is (714) 543-5437.

What is Chelsea Olivar's specialty?

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

When was this NPI record last updated?

The NPPES record for Chelsea Olivar was last updated on September 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.