NPIMap

Organization Active NPI

Quest Diagnostics LLC Il

  • Anatomic Pathology & Clinical Pathology Physician
  • Beaver Dam, WI
National Provider Identifier
1851901466
Registry record updated Sep 30, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X
Legal business name
QUEST DIAGNOSTICS LLC IL
Practice address
130 Warren St BLDG C
Beaver Dam, WI 53916-3062
Phone
(866) 697-8378
NPI assigned
Aug 7, 2020
Last updated
Sep 30, 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 30, 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
(610) 454-6000

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anatomic Pathology & Clinical Pathology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207ZP0102X Primary

Addresses

Primary practice location

130 Warren St BLDG C
Beaver Dam, WI 53916-3062

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 WI

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20170830001851 WI Part B Supplier - Independent Clinical Laboratory 3779474986 2 other NPIs on this enrollment
Practice locations: Beaver Dam, WI; Milwaukee, WI

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.

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

NPI Registry JSON

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

{
    "created_epoch": "1596758400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1790726400000",
    "number": "1851901466",
    "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": "130 WARREN ST BLDG C",
            "city": "BEAVER DAM",
            "state": "WI",
            "postal_code": "539163062",
            "telephone_number": "866-697-8378"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS LLC IL",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2020-08-07",
        "last_updated": "2026-09-30",
        "certification_date": "2026-09-30",
        "status": "A",
        "authorized_official_last_name": "TIMMERMAN",
        "authorized_official_first_name": "LEAH",
        "authorized_official_title_or_position": "VICE PRESIDENT",
        "authorized_official_telephone_number": "610-454-6000"
    },
    "taxonomies": [
        {
            "code": "207ZP0102X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Beaver Dam, WI

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 30, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.