Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

QUEST DIAGNOSTICS LLC IL
NPI 1124541388
Clinical Medical Laboratory in Dearborn, MI

Active since July 19, 2017CLIA 23D2129463 · Certificate of Compliance
3133 S TELEGRAPH RD STE B, DEARBORN, MI 48124(248) 321-9044 Get Directions Write a Review

NPPES record last updated: July 20, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 20, 2026, Jul 19, 2017 (2 updates tracked since 2017).

About Quest Diagnostics Llc Il NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

QUEST DIAGNOSTICS LLC IL (NPI 1124541388) is a healthcare organization registered as a clinical medical laboratory in Dearborn, Michigan and active in the NPI registry since July 2017. The organization holds a CLIA Certificate of Compliance certificate valid through August 23, 2027 and lists Leah D Timmerman, Vice President, as its authorized official.

NPPES Registry Identity

NPI1124541388
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS LLC IL
Location Address3133 S TELEGRAPH RD STE BDearborn, MI 48124-3472
Mailing Address4770 Regent BlvdIrving, TX 75063-2445
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialLeah D TimmermanVice President · (973) 520-2700
Enumeration DateJuly 19, 2017
Last NPPES UpdateJuly 20, 20262 updates tracked since enumeration
NPPES CertifiedJuly 20, 2026
NPI 1124541388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
3133 S TELEGRAPH RD STE B, Dearborn, MI 48124

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 23D2129463

Quest Diagnostics Inc - Dearborn Rrl · Dearborn, MI
Active · expires Aug 23, 2027
CLIA Number23D2129463
Laboratory TypeIndependent
Certificate Effective DateAugust 24, 2025
Certificate Expiration DateAugust 23, 2027
Laboratory DirectorMatthew E. Kraiza
Laboratory Phone(248) 321-9044
Laboratory LocationQuest Diagnostics Inc - Dearborn Rrl3133 S Telegraph Road, Dearborn, MI 48124
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
726 services316 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
52 services29 patients

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Quest Diagnostics LLC Il's NPI number?

The NPI number for Quest Diagnostics LLC Il is 1124541388. It was assigned to this organization in the NPPES registry on July 19, 2017.

Where is Quest Diagnostics LLC Il located?

Quest Diagnostics LLC Il is located at 3133 S Telegraph Rd Ste B, Dearborn, MI 48124. The listed phone number is (248) 321-9044.

What is Quest Diagnostics LLC Il's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Does Quest Diagnostics LLC Il hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 23D2129463) is associated with this NPI, valid through August 23, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Quest Diagnostics LLC Il was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.