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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Quest Diagnostics Clinical Laboratories Inc

Clinical Medical Laboratory in Lake Charles, LA · enumerated 2024 · authorized official Leah Timmerman, Sr. Vice President.

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

National Provider Identifier

1033942420

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Registry record

Entity type Organization (Type 2)
Legal business name Quest Diagnostics Clinical Laboratories Inc
Parent organization Quest Diagnostics Incorporated
Practice address 501 Dr Michael Debakey Dr, Lake Charles, LA, 70601
Phone (337) 312-8450
Enumeration date Aug 22, 2024
Last updated in NPPES Nov 20, 2024

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Leah Timmerman
Title Sr. Vice President
Phone (973) 520-2700

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 Quest Diagnostics Clinical Laboratories Inc?
The NPI for Quest Diagnostics Clinical Laboratories Inc is 1033942420, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Quest Diagnostics Clinical Laboratories Inc?
NPPES lists Leah Timmerman (Sr. Vice President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-20.