QUEST DIAGNOSTICS LLC
NPI 1972521920
Clinical Medical Laboratory in Norwalk, CT

Active since July 18, 2006CLIA 07D0644813 · Certificate of Compliance
40 CROSS ST, NORWALK, CT 06851(877) 868-2191 Get Directions Write a Review

NPPES record last updated: November 22, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Quest Diagnostics Llc NPPES

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

QUEST DIAGNOSTICS LLC (NPI 1972521920) is a healthcare organization registered as a clinical medical laboratory in Norwalk, Connecticut and active in the NPI registry since July 2006. The organization holds a CLIA Certificate of Compliance certificate valid through March 29, 2027 and lists Charles Albert Bowles, Vice President, as its authorized official.

NPPES Registry Identity

NPI1972521920
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS LLC
Location Address40 CROSS STNorwalk, CT 06851-4647
Mailing Address1201 S Collegeville RdCollegeville, PA 19426-2998 · (610) 454-6000
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialCharles Albert BowlesVice President · (610) 454-6000
Enumeration DateJuly 18, 2006
Last NPPES UpdateNovember 22, 2022
NPPES CertifiedNovember 22, 2022
NPI 1972521920 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
License Licensed in CT · 07D0644813
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.
40 CROSS ST, Norwalk, CT 06851

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 07D0644813

Quest Diagnostics LLC · Norwalk, CT
Active · expires Mar 29, 2027
CLIA Number07D0644813
Laboratory TypeIndependent
Certificate Effective DateMarch 30, 2025
Certificate Expiration DateMarch 29, 2027
Laboratory DirectorTricia Mancini
Laboratory Phone(475) 206-6966
Laboratory LocationQuest Diagnostics LLC40 Cross St, Ste 260, Norwalk, CT 06851
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 20

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

Pediatrics
40 CROSS ST, SUITE 300
NORWALK, CT 06851
Marriage & Family Therapist
40 CROSS ST, SUITE 240
NORWALK, CT 06851
Physical Therapist
40 CROSS ST, REHABILITATION SERVICES OF NORWALK HOSPITAL
NORWALK, CT 06851
Pediatrics
40 CROSS ST, SUITE 300
NORWALK, CT 06851
Dermatology
40 CROSS ST, SUITE 340
NORWALK, CT 06851
Internal Medicine (Cardiovascular Disease)
40 CROSS ST
NORWALK, CT 06851
Internal Medicine (Medical Oncology)
40 CROSS ST, 4TH FL
NORWALK, CT 06851
Internal Medicine (Cardiovascular Disease)
40 CROSS ST
NORWALK, CT 06851

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 1972521920. It was assigned to this organization in the NPPES registry on July 18, 2006.

Where is Quest Diagnostics LLC located?

Quest Diagnostics LLC is located at 40 Cross St, Norwalk, CT 06851. 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 07D0644813) is associated with this NPI, valid through March 29, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Quest Diagnostics LLC accept?

Health plans from Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) 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 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.