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Unilab Corporation

Clinical Medical Laboratory in Stockton, CA · enumerated 2007 · authorized official Charles Bowles, Vice President.

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

National Provider Identifier

1649315821

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Registry record

Entity type Organization (Type 2)
Legal business name Unilab Corporation
Other name <Unavail>
Parent organization Quest Diagnostics Incorporated
Practice address 2291 W March Lane, Suite 145 F, Stockton, CA, 95207
Phone (209) 951-5831
Enumeration date Feb 21, 2007
Last updated in NPPES Dec 11, 2018

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 05D0700053 (CA) Primary

Authorized official

Name Charles Bowles
Title Vice President
Phone (610) 454-6000

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-12-11. Verify at npiregistry.cms.hhs.gov.
Where is Unilab Corporation located?
The practice location on file with NPPES is in Stockton, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-11.