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MARIANNA SIDELLA
NPI 1063151934
Social Worker - Clinical in Pasadena, CA

Active since May 31, 2022
1020 S ARROYO PKWY STE 100, PASADENA, CA 91105(626) 403-2794 Get Directions Write a Review

NPPES record last updated: April 22, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 22, 2026, Jul 14, 2023, Jun 21, 2023 (3 updates tracked since 2023).

About Marianna Sidella NPPES

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

MARIANNA SIDELLA (NPI 1063151934) is an individual clinical provider in Pasadena, California, licensed in California (LCSW138072) and active in the NPI registry since May 2022.

NPPES Registry Identity

NPI1063151934
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARIANNA SIDELLA
Location Address1020 S ARROYO PKWY STE 100Pasadena, CA 91105-3973
Mailing Address1020 S Arroyo Pkwy Ste 100Pasadena, CA 91105-3973 · (626) 403-2794
Phone(626) 403-2794
Sole ProprietorYes
Enumeration DateMay 31, 2022
Last NPPES UpdateApril 22, 20263 updates tracked since enumeration
NPPES CertifiedApril 22, 2026
✔ NPI 1063151934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · LCSW138072
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.
Also ListedRehabilitation PractitionerTaxonomy 225400000X
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1020 S ARROYO PKWY STE 100, Pasadena, CA 91105
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Other Providers at the Same Location NPPES 19

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MELISSA DOMINGUEZ
Day Training/Habilitation Specialist
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794
CHRISTELLE DOREESE RODRIGUEZ RAC
Day Training/Habilitation Specialist
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794
EMILY JORDAN MSW
Student in an Organized Health Care Education/Training Program
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (877) 722-2737
TREVOR RUBIN
Rehabilitation Practitioner
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794
DANIELA PONCE
Student in an Organized Health Care Education/Training Program
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794
SAMANTHA NICOLE HOLGUIN
Rehabilitation Practitioner
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794
JUNG HO O
Peer Specialist
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 632-8112
KASEY JULIANNA HUERTA
Student in an Organized Health Care Education/Training Program
1020 S ARROYO PKWY STE 100
PASADENA, CA 91105
Los Angeles County (626) 403-2794

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 Marianna Sidella's NPI number?

The NPI number for Marianna Sidella is 1063151934. It was assigned to this individual provider in the NPPES registry on May 31, 2022.

Where is Marianna Sidella located?

Marianna Sidella practices at 1020 S Arroyo Pkwy Ste 100, Pasadena, CA 91105. The listed phone number is (626) 403-2794.

What is Marianna Sidella'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 Marianna Sidella was last updated on April 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.