NPIMap

Organization Active NPI

Quest Diagnostics of Pennsylvania, Inc.

  • Clinical Medical Laboratory
  • Pittsburgh, PA
National Provider Identifier
1841236684
Registry record updated Oct 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Medical LaboratoryTaxonomy code 291U00000X
License
39D0656976 Issued in PA
Legal business name
QUEST DIAGNOSTICS OF PENNSYLVANIA, INC.
Practice address
875 Greentree Rd
Four Parkway Center
Pittsburgh, PA 15220-3610
Phone
(800) 295-6598
NPI assigned
Jun 21, 2006
Last updated
Oct 6, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
QUEST DIAGNOSTICS INCORPORATEDAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Oct 6, 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 VP
Phone
(973) 520-2700

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Medical Laboratory 291U00000X 39D0656976 PA Primary

Addresses

Primary practice location

875 Greentree Rd
Four Parkway Center
Pittsburgh, PA 15220-3610

Mailing address

4770 Regent Blvd
Irving, TX 75063-2445

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20080530000363 PA Part B Supplier - Independent Clinical Laboratory 2365345550 Practice locations: Pittsburg, PA

Other NPIs with the same Medicare PAC ID 2

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

National Provider Directory

National Provider Directory
Tax ID family
MDS Laboratories8 organizations share this tax ID, including this one
Part of
Corning Nichols

Other organizations with this tax ID 7

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

Member of 1

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

Locations

5944 Collection Center Dr
Chicago, IL 60693

875 Greentree Rd
#4
Pittsburgh, PA 15220
Phone (412) 920-7600

875 Greentree Rd
#Four
Pittsburgh, PA 15220
Phone (800) 295-6598

Practitioners & affiliated clinicians

Practitioners 1

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": "1791244800000",
    "number": "1841236684",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "875 GREENTREE RD",
            "address_2": "FOUR PARKWAY CENTER",
            "city": "PITTSBURGH",
            "state": "PA",
            "postal_code": "152203610",
            "telephone_number": "800-295-6598"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "QUEST DIAGNOSTICS OF PENNSYLVANIA, INC.",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "QUEST DIAGNOSTICS INCORPORATED",
        "enumeration_date": "2006-06-21",
        "last_updated": "2026-10-06",
        "certification_date": "2026-10-06",
        "status": "A",
        "authorized_official_last_name": "TIMMERMAN",
        "authorized_official_first_name": "LEAH",
        "authorized_official_middle_name": "D",
        "authorized_official_title_or_position": "SR VP",
        "authorized_official_telephone_number": "973-520-2700"
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "PA",
            "license": "39D0656976",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Pittsburgh, PA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 6, 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.