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

Dr. Joowon Yoon

Dentist in Hawthrone, CA · enumerated 2015 · practices at Yoon, DDS, Inc.

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

National Provider Identifier

1992172084

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Registry record

Entity type Individual (Type 1)
Name Dr. Joowon Yoon
Sex Female
Practice address Hawthrone, CA, 90250
Phone (424) 348-2234
Fax (844) 742-0896
Enumeration date Aug 25, 2015
Last updated in NPPES May 6, 2026

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 64779 (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 Joowon Yoon?
The National Provider Identifier (NPI) for Joowon Yoon is 1992172084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joowon Yoon practice?
The practice location on file with NPPES is in Hawthrone, 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 2026-05-06.