NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Thomas Thanh Dong

General Practice Dentistry in Bellflower, CA · enumerated 2024 · practices at Western Dental Services, Inc..

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

National Provider Identifier

1639932270

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Registry record

Entity type Individual (Type 1)
Name Thomas Thanh Dong
Sex Male
Practice address Bellflower, CA, 90706
Enumeration date Feb 5, 2024
Last updated in NPPES Feb 5, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DDS109731 (CA) Primary

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.

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Frequently asked questions

What is the NPI number for Thomas Dong?
The National Provider Identifier (NPI) for Thomas Dong is 1639932270, a Type 1 (individual) record in the CMS NPPES registry.
Where does Thomas Dong practice?
The practice location on file with NPPES is in Bellflower, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-05.