NPI Portal NPI Lookup & Verification

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

Quest Diagnostics LLC

Clinical Medical Laboratory in Marlborough, MA · enumerated 2006 · authorized official Charles Bowles, Sr. Vice President.

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

National Provider Identifier

1952347791

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Quest Diagnostics LLC
Parent organization Quest Diagnostics Incorporated
Practice address 200 Forest St, 3rd Floor,Suite B, Marlborough, MA, 01752
Phone (774) 369-3900
Enumeration date Jun 21, 2006
Last updated in NPPES Feb 12, 2024

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 22D0076229 (MA) Primary

Authorized official

Name Charles Bowles
Title Sr. Vice President
Phone (610) 454-4122

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 2024-02-12. Verify at npiregistry.cms.hhs.gov.
Where is Quest Diagnostics LLC located?
The practice location on file with NPPES is in Marlborough, MA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-12.