Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David C Tsai, PHD

Q: What is the NPI number for David Tsai?

The National Provider Identifier (NPI) for David Tsai is 1366461642, a Type 1 (individual) record in the CMS NPPES registry.

Psychologist in Coatesville, PA · enumerated 2006.

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

National Provider Identifier

1366461642

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Registry record

Entity type Individual (Type 1)

Name David C Tsai

Credential PHD

Sex Male

Practice address 1400 Blackhorse Hill Rd, Coatesville, PA, 19320

Phone (610) 384-7711

Enumeration date Jul 18, 2006

Last updated in NPPES Feb 28, 2022

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS008823L (PA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 David Tsai?

The National Provider Identifier (NPI) for David Tsai is 1366461642, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Tsai practice?

The practice location on file with NPPES is in Coatesville, PA. 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 2022-02-28.