MS. JOSEFINA SIERRA
NPI 1063781128
Social Worker - Clinical in Ontario, CA

Active since December 19, 2011

NPPES record last updated: December 19, 2011. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Ms. Josefina Sierra NPPES

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

MS. JOSEFINA SIERRA (NPI 1063781128) is an individual clinical provider in Ontario, California, licensed in California (LCS 15702) and active in the NPI registry since December 2011.

NPPES Registry Identity

NPI1063781128
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. JOSEFINA SIERRA
Location Address317 W F STOntario, CA 91762-3205
Mailing Address317 W F StOntario, CA 91762-3205
Sole ProprietorNo
Enumeration DateDecember 19, 2011
NPI 1063781128 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 · LCS 15702
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.

317 W F ST, Ontario, CA 91762

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.

Marriage & Family Therapist
317 W F ST
ONTARIO, CA 91762
Social Worker (Clinical)
317 W F ST
ONTARIO, CA 91762
Social Worker (Clinical)
317 W F ST
ONTARIO, CA 91762
Counselor
317 W F ST
ONTARIO, CA 91762
Counselor (Addiction (Substance Use Disorder))
317 W F ST
ONTARIO, CA 91762
Counselor (Mental Health)
317 W F ST
ONTARIO, CA 91762
Counselor (School)
317 W F ST
ONTARIO, CA 91762
Counselor (Mental Health)
317 W F ST
ONTARIO, CA 91762

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1063781128, enumerated as an "individual" on December 19, 2011.

The provider is located at 317 W F ST ONTARIO, CA 91762 and the phone number is (909) 986-7111.

Social Worker with taxonomy code 1041C0700X and a focus in Clinical.