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

Quest Diagnostics LLC Il

Q: What is the NPI number for Quest Diagnostics LLC Il?

The NPI for Quest Diagnostics LLC Il is 1235910936, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Medical Laboratory in Davenport, IA · enumerated 2023 · authorized official Charles Bowles, Vice President.

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

National Provider Identifier

1235910936

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Registry record

Entity type Organization (Type 2)

Legal business name Quest Diagnostics LLC Il

Parent organization Quest Diagnostics Incorporated

Practice address 1510 E Rusholme St, Davenport, IA, 52803

Phone (866) 697-8378

Enumeration date Oct 9, 2023

Last updated in NPPES Mar 12, 2024

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Charles Bowles

Title Vice President

Phone (866) 697-8378

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

What is the NPI number for Quest Diagnostics LLC Il?

The NPI for Quest Diagnostics LLC Il is 1235910936, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Quest Diagnostics LLC Il?

NPPES lists Charles Bowles (Vice President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-12.