NPIMap

Organization Active NPI

Quest Diagnostics LLC

  • Clinical Medical Laboratory
  • Wallingford, CT
National Provider Identifier
1174569909
Registry record updated Sep 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
License
07D0093126 Issued in CT
Legal business name
QUEST DIAGNOSTICS LLC
Practice address
3 Sterling Dr
Wallingford, CT 06492-5915
Phone
(800) 982-6810
NPI assigned
Jun 21, 2006
Organization subpart
Yes
Parent organization
QUEST DIAGNOSTICS INCORPORATEDAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Sep 4, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Leah D Timmerman
Title
Sr. Vice President
Phone
(973) 520-2700

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X 07D0093126 CT Primary

Addresses

Primary practice location

3 Sterling Dr
Wallingford, CT 06492-5915

Mailing address

4770 Regent Blvd
Irving, TX 75063-2445
Phone (866) 697-8378

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CT

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20071227000131 CT Part B Supplier - Independent Clinical Laboratory 3072563238 14 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Hartford, CT; Norwich, CT; Stratford, CT; Wallingford, CT; Danbury, CT

Other NPIs on the same Medicare enrollment 14

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

View all 14

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
07D0093126Quest Diagnostics, LLC3 Sterling Drive, Wallingford, CT 06492ComplianceMay 2, 2027

National Provider Directory

National Provider Directory
Tax ID family
Quest Diagnostics LLC13 organizations share this tax ID, including this one
Part of
Questdiagnost Ic Inc

Other organizations with this tax ID 12

Organizations that report the same tax identification number in the National Provider Directory.

Locations

3 Sterling Dr
Wallingford, CT 06492
Phone (203) 949-5500

3521 Collection Center Dr
Chicago, IL 60693

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1150848000000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1788480000000",
    "number": "1174569909",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4770 REGENT BLVD",
            "city": "IRVING",
            "state": "TX",
            "postal_code": "750632445",
            "telephone_number": "866-697-8378",
            "fax_number": "610-271-4245"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3 STERLING DR",
            "city": "WALLINGFORD",
            "state": "CT",
            "postal_code": "064925915",
            "telephone_number": "800-982-6810"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2006-06-21",
        "last_updated": "2026-09-04",
        "certification_date": "2026-09-04",
        "status": "A",
        "authorized_official_last_name": "TIMMERMAN",
        "authorized_official_first_name": "LEAH",
        "authorized_official_middle_name": "D",
        "authorized_official_title_or_position": "SR. VICE PRESIDENT",
        "authorized_official_telephone_number": "973-520-2700"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "CT",
            "license": "07D0093126",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Wallingford, CT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.