Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

J.Thomas Chess,DDS,Inc.

Dental Clinic/Center in South Pasadena, CA · enumerated 2006 · authorized official Joseph Chess, President-Owner.

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

National Provider Identifier

1912096215

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Registry record

Entity type Organization (Type 2)

Legal business name J.Thomas Chess,DDS,Inc.

Practice address 500 Columbia St, South Pasadena, CA, 91030

Phone (323) 682-1133

Fax (323) 682-1284

Enumeration date Oct 12, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities · License 17658 (CA) Primary

Authorized official

Name Joseph Chess

Title President-Owner

Phone (323) 682-1133

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is J.Thomas Chess,DDS,Inc. located?

The practice location on file with NPPES is in South Pasadena, CA.

Providers at this address

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Mary Chess Abelson General Practice Dentistry · South Pasadena, CA NPI 1942383831

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.