NPIMap

Organization Active NPI

Quest Diagnostics LLC Il

  • Clinical Medical Laboratory
  • Wood Dale, IL
National Provider Identifier
1881630614
Registry record updated Sep 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
License
14D0417052 Issued in IL
Legal business name
QUEST DIAGNOSTICS LLC IL
Practice address
1355 Mittel Blvd
Wood Dale, IL 60191-1024
Phone
(800) 323-5917
NPI assigned
Jun 21, 2006
Last updated
Sep 17, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
QUEST DIAGNOSTICS INCORPORATEDAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Sep 17, 2026

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

Authorized official

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X 14D0417052 IL Primary

Addresses

Primary practice location

1355 Mittel Blvd
Wood Dale, IL 60191-1024

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 IL

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040526000665 IL Part B Supplier - Independent Clinical Laboratory 3779474986 12 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: East Moline, IL; Wood Dale, IL; Schaumburg, IL; Rock Island, IL; Moline, IL; Chicago, IL

Other NPIs on the same Medicare enrollment 11

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

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
14D0417052Quest Diagnostics LLC (Il)1355 Mittel Blvd, Wood Dale, IL 60191AccreditationFeb 8, 2027

National Provider Directory

National Provider Directory
Part of
Corning Nichols

Locations

12992 Collections Ctr Dr
Chicago, IL 60693

2431 Collection Ctr Dr
Chicago, IL 60693

4465 White Bear Pkwy
Ste 1
White Bear Lake, MN 55110

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

Practitioners & affiliated clinicians

Practitioners 5

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

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": "1789603200000",
    "number": "1881630614",
    "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": "1355 MITTEL BLVD",
            "city": "WOOD DALE",
            "state": "IL",
            "postal_code": "601911024",
            "telephone_number": "800-323-5917"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS LLC IL",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2006-06-21",
        "last_updated": "2026-09-17",
        "certification_date": "2026-09-17",
        "status": "A",
        "authorized_official_last_name": "TIMMERMAN",
        "authorized_official_first_name": "LEAH",
        "authorized_official_middle_name": "D",
        "authorized_official_title_or_position": "VICE PRESIDENT",
        "authorized_official_telephone_number": "973-520-2700"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "IL",
            "license": "14D0417052",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Wood Dale, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 17, 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.