Quest Diagnostics Incorporated

Quest Diagnostics Incorporated is a healthcare organization registered as Clinical Medical Laboratory in Nashua, NH, holding Type 2 (organization) NPI 1720006455 since 2006. The authorized official on file is Gerald Cartier, Vp of Revenue Services.

✓ Active NPI ✓ Valid NPI checksum Organization subpart

NPI	1720006455
Entity type	Organization (Type 2)
Legal business name	Quest Diagnostics Incorporated
Parent organization	Quest Diagnostics Incorporated
Practice address	21 EAST HOLLIS ST, Nashua, NH, 03060
Phone	6035774060
Enumeration date	2006-07-18
Last updated in NPPES	2012-10-04

Authorized official

Name	Gerald Cartier
Title	Vp of Revenue Services
Phone	4846767000

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
291U00000X	Clinical Medical Laboratory	Primary	30D0675059	NH

Copy-ready billing details

Provider: Quest Diagnostics Incorporated
NPI: 1720006455
Taxonomy: 291U00000X (Clinical Medical Laboratory)
Address: 21 EAST HOLLIS ST, Nashua, NH, 03060

Verify this record

Cross-check NPI 1720006455 against the authoritative CMS record: view Quest Diagnostics Incorporated on the official NPPES registry .

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 or validate an NPI number.

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 2012-10-04. Verify at npiregistry.cms.hhs.gov.

Where is Quest Diagnostics Incorporated located?

The practice location on file with NPPES is in Nashua, NH.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2012-10-04.