QUEST DIAGNOSTICS LLC
NPI 1780886333
Clinical Medical Laboratory in Stamford, CT

Active since June 05, 2007CLIA 07D0102344 · Certificate of Compliance
1250 SUMMER ST, SUITE 206, STAMFORD, CT 06905(877) 868-2191 Get Directions Write a Review

NPPES record last updated: November 26, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Quest Diagnostics Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

QUEST DIAGNOSTICS LLC (NPI 1780886333) is a healthcare organization registered as a clinical medical laboratory in Stamford, Connecticut and active in the NPI registry since June 2007. The organization holds a CLIA Certificate of Compliance certificate valid through March 23, 2027 and lists G Scott Cartier, Vp Of Billing, as its authorized official.

NPPES Registry Identity

NPI1780886333
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS LLC
Location Address1250 SUMMER ST, SUITE 206Stamford, CT 06905-5358
Mailing Address2750 Monroe BlvdNorristown, PA 19403-2429 · (484) 676-7731
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialG Scott CartierVp Of Billing · (484) 676-7731
Enumeration DateJune 5, 2007
Last NPPES UpdateNovember 26, 2007
NPI 1780886333 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
1250 SUMMER ST, Stamford, CT 06905

Accepted Insurance

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 07D0102344

Quest Diagnostics LLC · Stamford, CT
Active · expires Mar 23, 2027
CLIA Number07D0102344
Laboratory TypeIndependent
Certificate Effective DateMarch 24, 2025
Certificate Expiration DateMarch 23, 2027
Laboratory DirectorTricia Mancini
Laboratory Phone(475) 619-3857
Laboratory LocationQuest Diagnostics LLC1250 Summer St, Ste 203, Stamford, CT 06905
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Chiropractor
1250 SUMMER ST, SUITE 202
STAMFORD, CT 06905
Dermatology
1250 SUMMER ST
STAMFORD, CT 06905
Physical Therapist
1250 SUMMER ST
STAMFORD, CT 06905
Physical Therapist
1250 SUMMER ST
STAMFORD, CT 06905
Physical Therapist
1250 SUMMER ST, SUITE 204
STAMFORD, CT 06905
Psychologist (Clinical)
1250 SUMMER ST, SUITE 202
STAMFORD, CT 06905
Counselor (Professional)
1250 SUMMER ST, SUITE 204
STAMFORD, CT 06905
Social Worker
1250 SUMMER ST, SUITE 202
STAMFORD, CT 06905

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Quest Diagnostics LLC's NPI number?

The NPI number for Quest Diagnostics LLC is 1780886333. It was assigned to this organization in the NPPES registry on June 5, 2007.

Where is Quest Diagnostics LLC located?

Quest Diagnostics LLC is located at 1250 Summer St Suite 206, Stamford, CT 06905. The listed phone number is (877) 868-2191.

What is Quest Diagnostics LLC's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Does Quest Diagnostics LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 07D0102344) is associated with this NPI, valid through March 23, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Quest Diagnostics LLC accept?

Health plans from CHRISTUS Health Plan, Oscar Health Insurance, Oscar Health Maintenance Organization of Florida, Oscar Health Plan, Inc. and Oscar Insurance Company and 1 other insurer list Quest Diagnostics LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Quest Diagnostics LLC was last updated on November 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.