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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.

KAREN LIN TSAI LCSW
NPI 1346621901
Social Worker - Clinical in San Francisco, CA

Active since June 09, 2015
582 MARKET ST STE 306, SAN FRANCISCO, CA 94104(650) 741-0950 Get Directions Write a Review

NPPES record last updated: August 17, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 17, 2026, Aug 8, 2025, Apr 9, 2020 and 3 more (6 updates tracked since 2018).

About Karen Lin Tsai Lcsw NPPES

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

KAREN LIN TSAI LCSW (NPI 1346621901) is an individual clinical provider in San Francisco, California, licensed in California (LCS81617) and active in the NPI registry since June 2015. She maintains a secondary practice location in Berkeley.

NPPES Registry Identity

NPI1346621901
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKAREN LIN TSAICredential: LCSW
Location Address582 MARKET ST STE 306San Francisco, CA 94104-5304
Mailing Address582 Market St Ste 306San Francisco, CA 94104-5304
Phone(650) 741-0950
Sole ProprietorYes
Enumeration DateJune 9, 2015
Last NPPES UpdateAugust 17, 20266 updates tracked since enumeration
NPPES CertifiedAugust 17, 2026
✔ NPI 1346621901 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 · LCS81617
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 ListedCounselor · Mental HealthTaxonomy 101YM0800X · License ASW 64075 (CA)
582 MARKET ST STE 306, San Francisco, CA 94104
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Secondary Practice Location 1

Location 12222 Bancroft WayBerkeley, CA 94720 · Phone (510) 642-9494

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 Karen Tsai's NPI number?

The NPI number for Karen Tsai is 1346621901. It was assigned to this individual provider in the NPPES registry on June 9, 2015.

Where is Karen Tsai located?

Karen Tsai practices at 582 Market St Ste 306, San Francisco, CA 94104. The listed phone number is (650) 741-0950.

What is Karen Tsai'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 Karen Tsai was last updated on August 17, 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.