QUEST DIAGNOSTICS LLC
NPI 1851982623
Clinical Medical Laboratory in Chicago, IL

Active since February 03, 2021CLIA 14D2211006 · Waiver
5635 W BELMONT AVE, CHICAGO, IL 60634(773) 736-1830(773) 622-8055 Get Directions Write a Review

NPPES record last updated: February 3, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Quest Diagnostics Llc NPPES

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

QUEST DIAGNOSTICS LLC (NPI 1851982623) is a healthcare organization registered as a clinical medical laboratory in Chicago, Illinois and active in the NPI registry since February 2021. The organization holds a CLIA Waiver certificate valid through January 24, 2027 and lists Charles Albert Bowles, Vice President, as its authorized official.

NPPES Registry Identity

NPI1851982623
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS LLC
Location Address5635 W BELMONT AVEChicago, IL 60634-4384
Mailing Address1201 S Collegeville RdCollegeville, PA 19426-2998 · (610) 454-6000 · Fax (610) 271-4245
Fax(773) 622-8055
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialCharles Albert BowlesVice President · (610) 454-6000
Enumeration DateFebruary 3, 2021
NPPES CertifiedFebruary 3, 2021
NPI 1851982623 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.
5635 W BELMONT AVE, Chicago, IL 60634

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 Waiver 14D2211006

Quest Diagnostics - Belmont Cragin Health Center · Chicago, IL
Active · expires Jan 24, 2027
CLIA Number14D2211006
Laboratory TypeIndependent
Certificate Effective DateJanuary 25, 2025
Certificate Expiration DateJanuary 24, 2027
Laboratory DirectorMatthew Kraiza
Laboratory Phone(773) 736-1830
Laboratory LocationQuest Diagnostics - Belmont Cragin Health Center5635 W Belmont - Lab Room, Chicago, IL 60634
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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.

Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
32 services24 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.
19 services17 patients

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Clinical Medical Laboratory
5635 W BELMONT AVE
CHICAGO, IL 60634
Social Worker (Clinical)
5635 W BELMONT AVE
CHICAGO, IL 60634
Physician Assistant
5635 W BELMONT AVE
CHICAGO, IL 60634
Social Worker
5635 W BELMONT AVE
CHICAGO, IL 60634
Physician Assistant
5635 W BELMONT AVE
CHICAGO, IL 60634
Dentist
5635 W BELMONT AVE
CHICAGO, IL 60634
Physician Assistant
5635 W BELMONT AVE
CHICAGO, IL 60634
Counselor (Mental Health)
5635 W BELMONT AVE
CHICAGO, IL 60634

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's NPI number?

The NPI number for Quest Diagnostics LLC is 1851982623. It was assigned to this organization in the NPPES registry on February 3, 2021.

Where is Quest Diagnostics LLC located?

Quest Diagnostics LLC is located at 5635 W Belmont Ave, Chicago, IL 60634. The listed phone number is (773) 736-1830.

What is Quest Diagnostics LLC's specialty?

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

Does Quest Diagnostics LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D2211006) is associated with this NPI, valid through January 24, 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 was last updated on February 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.