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MICHELLE SIERRA
NPI 1851067177
Social Worker - Clinical in Nuevo, CA

Active since August 17, 2021
29780 RESERVOIR AVE, NUEVO, CA 92567(951) 928-3836 Get Directions Write a Review

NPPES record last updated: February 23, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 31, 2025, Aug 17, 2021 (2 updates tracked since 2021).

About Michelle Sierra NPPES

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

MICHELLE SIERRA (NPI 1851067177) is an individual clinical provider in Nuevo, California, licensed in California (112058) and active in the NPI registry since August 2021.

NPPES Registry Identity

NPI1851067177
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMICHELLE SIERRA
Location Address29780 RESERVOIR AVENuevo, CA 92567
Mailing AddressPo Box 633Garden Grove, CA 92842-0633
Phone(951) 928-3836
Sole ProprietorNo
Enumeration DateAugust 17, 2021
Last NPPES UpdateFebruary 23, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 23, 2026
✔ NPI 1851067177 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 · 112058
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.
29780 RESERVOIR AVE, Nuevo, CA 92567
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Other Names 1

Former Name (1)Michelle Contreras

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 Michelle Sierra's NPI number?

The NPI number for Michelle Sierra is 1851067177. It was assigned to this individual provider in the NPPES registry on August 17, 2021. The provider is also known as Michelle Contreras.

Where is Michelle Sierra located?

Michelle Sierra practices at 29780 Reservoir Ave, Nuevo, CA 92567. The listed phone number is (951) 928-3836.

What is Michelle Sierra'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 Michelle Sierra was last updated on February 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.