NPIMap

Organization Active NPI

Quest Diagnostics LLC Il

  • Clinical Medical Laboratory
  • Mt Pleasant, IA
National Provider Identifier
1942194196
Registry record updated May 28, 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
501 S White St Ste 1
Mount Pleasant, IA 52641-2600
Phone
(319) 423-3527
NPI assigned
Jun 4, 2025
Last updated
May 28, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
QUEST DIAGNOSTICS INCORPORATEDAs reported in NPPES

NPPES NPI Registry

Updated by the provider on May 28, 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 Primary

Addresses

Primary practice location

501 S White St Ste 1
Mount Pleasant, IA 52641-2600

Mailing address

4770 Regent Blvd
Irving, TX 75063-2445

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20260408000663 IA Part B Supplier - Independent Clinical Laboratory 9931008893 Practice locations: Mt Pleasant, IA

Other NPIs with the same Medicare PAC ID 5

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

  • Lab One LLC

    dba Quest Diagnostics

    • Clinical Medical Laboratory
    • Lake Village, AR
    • NPI 1669800165

    9931008893

    Same PAC ID
  • Labone LLC

    dba Quest Diagnostics

    • Clinical Medical Laboratory
    • Lenexa, KS
    • NPI 1609812445

    9931008893

    Same PAC ID
  • Labone LLC

    dba Quest Diagnostics

    • Clinical Medical Laboratory
    • Lexington, NE
    • NPI 1639735269

    9931008893

    Same PAC ID
  • Labone LLC
    • Clinical Medical Laboratory
    • Oklahoma City, OK
    • NPI 1770157125

    9931008893

    Same PAC ID
  • Labone LLC

    dba Quest Diagnostics

    • Clinical Medical Laboratory
    • Cape Girardeau, MO
    • NPI 1972857407

    9931008893

    Same PAC ID

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
16D2322277Quest Diagnostics-Family Med Mt Pleasant501 S White St Ste 1, Mount Pleasant, IA 52641Certificate of waiverApr 16, 2027

National Provider Directory

National Provider Directory
Tax ID family
Quest Diagnostics LLC Il24 organizations share this tax ID, including this one
Part of
Corning Nichols

Other organizations with this tax ID 23

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

View all 23

Member of 2

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": "1748995200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1779926400000",
    "number": "1942194196",
    "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",
            "fax_number": "610-271-4245"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "501 S WHITE ST STE 1",
            "city": "MOUNT PLEASANT",
            "state": "IA",
            "postal_code": "526412600",
            "telephone_number": "319-423-3527"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS LLC IL",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2025-06-04",
        "last_updated": "2026-05-28",
        "certification_date": "2026-05-28",
        "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": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Mt Pleasant, IA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 28, 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.