NPIMap

Organization Active NPI

Quest Diagnostics LLC Il

  • Clinical Medical Laboratory
  • Davenport, IA
National Provider Identifier
1366223166
Registry record updated Sep 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
Legal business name
QUEST DIAGNOSTICS LLC IL
Practice address
500 W River Dr
Davenport, IA 52801-1014
Phone
(563) 336-3125
NPI assigned
Oct 9, 2023
Last updated
Sep 29, 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 29, 2026

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

Authorized official

Name
Leah Timmerman
Title
Vice President
Phone
(866) 697-8378

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X Primary

Addresses

Primary practice location

500 W River Dr
Davenport, IA 52801-1014

Mailing address

4770 Regent Blvd
Irving, TX 75063-2445
Phone (214) 932-8018

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20240722000861 IA Part B Supplier - Independent Clinical Laboratory 3779474986 2 other NPIs on this enrollment
Practice locations: Clinton, IA; Davenport, IA

Other NPIs with the same Medicare PAC ID 4

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

Other NPIs on the same Medicare enrollment 2

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
16D2210041Quest Diagnostics-CHC River Drive500 West River Drive, Davenport, IA 52801Certificate of waiverJan 18, 2027

National Provider Directory

National Provider Directory
Tax ID family
Quest Diagnostics LLC Il25 organizations share this tax ID, including this one
Part of
Corning Lab Servicesinc

Other organizations with this tax ID 24

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

View all 24

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

NPI Registry JSON

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

{
    "created_epoch": "1696809600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790640000000",
    "number": "1366223166",
    "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": "214-932-8018",
            "fax_number": "610-271-4245"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 W RIVER DR",
            "city": "DAVENPORT",
            "state": "IA",
            "postal_code": "528011014",
            "telephone_number": "563-336-3125"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS LLC IL",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2023-10-09",
        "last_updated": "2026-09-29",
        "certification_date": "2026-09-29",
        "status": "A",
        "authorized_official_last_name": "TIMMERMAN",
        "authorized_official_first_name": "LEAH",
        "authorized_official_title_or_position": "VICE PRESIDENT",
        "authorized_official_telephone_number": "866-697-8378"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Davenport, IA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 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.