QUEST DIAGNOSTICS LLC
NPI 1225887615
Clinical Medical Laboratory in North Dartmouth, MA

Active since May 16, 2024CLIA Certified · 2 labs
531 FAUNCE CORNER RD, NORTH DARTMOUTH, MA 02747(401) 230-7317 Get Directions Write a Review

NPPES record last updated: May 15, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 15, 2025, May 16, 2024 (2 updates tracked since 2024).

About Quest Diagnostics Llc NPPES

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

QUEST DIAGNOSTICS LLC (NPI 1225887615) is a healthcare organization registered as a clinical medical laboratory in North Dartmouth, Massachusetts and active in the NPI registry since May 2024. The organization holds 2 active CLIA laboratory certificates and lists Leah D Timmerman, Sr. Vice President, as its authorized official.

NPPES Registry Identity

NPI1225887615
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS LLC
Location Address531 FAUNCE CORNER RDNorth Dartmouth, MA 02747-1242
Mailing Address14275 Midway Rd Ste 400Addison, TX 75001-3661 · (774) 843-3062
Organization SubpartNo
Authorized OfficialLeah D TimmermanSr. Vice President · (973) 520-2700
Enumeration DateMay 16, 2024
Last NPPES UpdateMay 15, 20252 updates tracked since enumeration
NPPES CertifiedMay 15, 2025
NPI 1225887615 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.
531 FAUNCE CORNER RD, North Dartmouth, MA 02747

CLIA Laboratory Certificates CMS CLIA 2

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 22D0081915

Quest Diagnostics Massachusetts LLC · North Dartmouth, MA
Active · expires Aug 25, 2026
CLIA Number22D0081915
Laboratory TypePhysician Office
Certificate Effective DateAugust 26, 2024
Certificate Expiration DateAugust 25, 2026
Laboratory DirectorDr. Christopher E. Owens
Laboratory Phone(860) 844-9763
Laboratory LocationQuest Diagnostics Massachusetts LLC531 Faunce Corner Rd, North Dartmouth, MA 02747
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.

Certificate of Compliance 22D0674566

Quest Diagnostics Massachusetts LLC · North Dartmouth, MA
Active · expires Aug 24, 2026
CLIA Number22D0674566
Laboratory TypeIndependent
Certificate Effective DateAugust 25, 2024
Certificate Expiration DateAugust 24, 2026
Laboratory DirectorLixia Chen
Laboratory Phone(774) 309-1545
Laboratory LocationQuest Diagnostics Massachusetts LLC535 Faunce Corner Road, North Dartmouth, MA 02747
CLIA data matches this NPI record on: 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.

Nurse Practitioner (Pediatrics)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Psychiatry & Neurology (Psychiatry)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Nurse Practitioner (Family)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Physician Assistant (Surgical)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Obstetrics & Gynecology
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Nurse Practitioner (Adult Health)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747
Internal Medicine
531 FAUNCE CORNER RD
N DARTMOUTH, MA 02747
Occupational Therapist (Hand)
531 FAUNCE CORNER RD
DARTMOUTH, MA 02747

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 1225887615. It was assigned to this organization in the NPPES registry on May 16, 2024.

Where is Quest Diagnostics LLC located?

Quest Diagnostics LLC is located at 531 Faunce Corner Rd, North Dartmouth, MA 02747. The listed phone number is (401) 230-7317.

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 CLIA laboratory certificates?

Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

When was this NPI record last updated?

The NPPES record for Quest Diagnostics LLC was last updated on May 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.