1. Home
  2. Directory
  3. California
  4. San Leandro
  5. Social Worker
  6. NPI Profile

TRISTAN OLSON
NPI 1396290920
Social Worker - Clinical in San Leandro, CA

Active since August 24, 2016
400 ESTUDILLO AVE STE 100, SAN LEANDRO, CA 94577(510) 924-0548 Get Directions Write a Review

NPPES record last updated: February 6, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Feb 6, 2025, Aug 15, 2018, Aug 24, 2016 (3 updates tracked since 2016).

About Tristan Olson NPPES

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

TRISTAN OLSON (NPI 1396290920) is an individual clinical provider in San Leandro, California, licensed in California (LCSW121875) and active in the NPI registry since August 2016.

NPPES Registry Identity

NPI1396290920
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameTRISTAN OLSON
Location Address400 ESTUDILLO AVE STE 100San Leandro, CA 94577-4962
Mailing Address400 Estudillo Ave Ste 100San Leandro, CA 94577-4962 · (510) 924-0548
Phone(510) 924-0548
Sole ProprietorNo
Enumeration DateAugust 24, 2016
Last NPPES UpdateFebruary 6, 20253 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2025
✔ NPI 1396290920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · LCSW121875
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
400 ESTUDILLO AVE STE 100, San Leandro, CA 94577
Open in Google Maps ↗

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.

MAREN ELIZABETH TROTTER ASW
Counselor (Mental Health)
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 352-9200
ALEXIS ELYSE SANCHEZ
Social Worker (Clinical)
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548
HAO-YUN CHU
Student in an Organized Health Care Education/Training Program
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548
MS. JENNIFER RAE CASTELLO MSW, LCSW
Social Worker (Clinical)
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548
CINDY TERESA GUTIERREZ
Community Health Worker
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548
EMMA MARTINEZ
Student in an Organized Health Care Education/Training Program
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548
MANDY RENE RIVAS-CROSS ASW 123267
Social Worker
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (408) 807-6787
IVVETTE MORA ESTRADA
Case Manager/Care Coordinator
400 ESTUDILLO AVE STE 100
SAN LEANDRO, CA 94577
Alameda County (510) 924-0548

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 Tristan Olson's NPI number?

The NPI number for Tristan Olson is 1396290920. It was assigned to this individual provider in the NPPES registry on August 24, 2016.

Where is Tristan Olson located?

Tristan Olson practices at 400 Estudillo Ave Ste 100, San Leandro, CA 94577. The listed phone number is (510) 924-0548.

What is Tristan Olson'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 Tristan Olson was last updated on February 6, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS; the most recent full sync was completed on July 26, 2026. Anyone can also request an on-demand re-check of this record against the live CMS registry, directly from this page.