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

ESTEFANY GUZMAN LCSW
NPI 1215399449
Social Worker - Clinical in Fullerton, CA

Active since March 26, 2016
801 E CHAPMAN AVE STE 203, FULLERTON, CA 92831(714) 680-9000(714) 680-8233 Get Directions Write a Review

NPPES record last updated: September 9, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 9, 2026, Nov 19, 2022, Dec 16, 2021 and 3 more (6 updates tracked since 2016).

About Estefany Guzman Lcsw NPPES

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

ESTEFANY GUZMAN LCSW (NPI 1215399449) is an individual clinical provider in Fullerton, California, licensed in California (112054) and active in the NPI registry since March 2016.

NPPES Registry Identity

NPI1215399449
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameESTEFANY GUZMANCredential: LCSW
Location Address801 E CHAPMAN AVE STE 203Fullerton, CA 92831-3846
Mailing AddressPo Box 919Fullerton, CA 92836-0919 · (714) 680-9000 · Fax (714) 680-2833
Phone(714) 680-9000
Fax(714) 680-8233
Sole ProprietorNo
Enumeration DateMarch 26, 2016
Last NPPES UpdateSeptember 9, 20266 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2026
✔ NPI 1215399449 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 · 112054
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.
801 E CHAPMAN AVE STE 203, Fullerton, CA 92831
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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.

MS. RAFAELA VARGAS
Student in an Organized Health Care Education/Training Program
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
STEPHANIE FERNANDEZ
Case Manager/Care Coordinator
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
YESENIA T VELAZQUEZ ACSW
Counselor (Mental Health)
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
JENNIFER GONZALEZ
Student in an Organized Health Care Education/Training Program
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
ANDREA ALEXIA CARRERA
Social Worker (Clinical)
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
MRS. DIANA SANCHEZ-BECERRA
Student in an Organized Health Care Education/Training Program
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
DINA ISLAS
Licensed Vocational Nurse
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000
JUVENAL CASTILLO
Counselor (Professional)
801 E CHAPMAN AVE STE 203
FULLERTON, CA 92831
Orange County (714) 680-9000

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 Estefany Guzman's NPI number?

The NPI number for Estefany Guzman is 1215399449. It was assigned to this individual provider in the NPPES registry on March 26, 2016.

Where is Estefany Guzman located?

Estefany Guzman practices at 801 E Chapman Ave Ste 203, Fullerton, CA 92831. The listed phone number is (714) 680-9000.

What is Estefany Guzman'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 Estefany Guzman was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.