Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas Tu, LCSW

Q: What is the NPI number for Thomas Tu?

The National Provider Identifier (NPI) for Thomas Tu is 1528444684, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Cupertino, CA · enumerated 2015 · practices at Kaiser Foundation Health Plan Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1528444684

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Registry record

Entity type Individual (Type 1)

Name Thomas Tu

Credential LCSW

Sex Male

Practice address 19000 Homestead Rd, Cupertino, CA, 95014

Phone (408) 366-4454

Enumeration date Jul 30, 2015

Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 63301 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Thomas Tu?

The National Provider Identifier (NPI) for Thomas Tu is 1528444684, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Tu practice?

The practice location on file with NPPES is in Cupertino, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-30.