Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

QUEST DIAGNOSTICS LLC IL
NPI 1346389764
Clinical Medical Laboratory in Schaumburg, IL

Q: What is Quest Diagnostics LLC Il's NPI number?

The NPI number for Quest Diagnostics LLC Il is 1346389764. It was assigned to this organization in the NPPES registry on February 5, 2007.

Q: What is Quest Diagnostics LLC Il's specialty?

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

Active since February 05, 2007CLIA 14D0416537 · Accreditation

506 E STATE PKWY, SCHAUMBURG, IL 60173(708) 885-2010 Get Directions Write a Review

NPPES record last updated: July 10, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 10, 2026, Dec 5, 2018 (2 updates tracked since 2018).

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About Quest Diagnostics Llc Il NPPES

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

QUEST DIAGNOSTICS LLC IL (NPI 1346389764) is a healthcare organization registered as a clinical medical laboratory in Schaumburg, Illinois and active in the NPI registry since February 2007. The organization holds an CLIA Accreditation certificate valid through February 8, 2027 and lists Leah D Timmerman, Vice President, as its authorized official.

NPPES Registry Identity

NPI1346389764

Entity TypeOrganization

Primary Taxonomy291U00000X

Legal Business NameQUEST DIAGNOSTICS LLC IL

Location Address506 E STATE PKWYSchaumburg, IL 60173-4538

Mailing Address4770 Regent BlvdIrving, TX 75063-2445

Phone(708) 885-2010

Organization SubpartYesParent: Quest Diagnostics Incorporated

Authorized OfficialLeah D TimmermanVice President · (973) 520-2700

Enumeration DateFebruary 5, 2007

Last NPPES UpdateJuly 10, 20262 updates tracked since enumeration

NPPES CertifiedJuly 10, 2026

✔ NPI 1346389764 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories

Taxonomy Code291U00000X

License✔ Licensed in IL · 14D0416537

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.

506 E STATE PKWY, Schaumburg, IL 60173

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, Medica, Quartz and more.Insurance ›

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 Accreditation 14D0416537

Quest Diagnostics LLC (il) · Schaumburg, IL

Active · expires Feb 8, 2027

CLIA Number14D0416537

Laboratory TypeIndependent

Certificate Effective DateFebruary 9, 2025

Certificate Expiration DateFebruary 8, 2027

Laboratory DirectorDr. Kristie L. White

Laboratory Phone(847) 885-2010

Laboratory LocationQuest Diagnostics LLC (il)506 E State Parkway, Schaumburg, IL 60173

CLIA data matches this NPI record on: Address Name

This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Areas of Expertise CMS Part B claims 43

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

26,240 services10,398 patients

Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, with screening by automated system and manual rescreening under physician supervision G0145

This is a procedure to check for abnormal cells in the lower part of the womb or the birth canal. Cells are collected in a special fluid and prepared in a thin layer. They are then examined by an automated system and manually reviewed by a doctor for accuracy.

4,968 services4,968 patients

Detection test by nucleic acid for human papillomavirus (hpv), high-risk types 87624

This test detects high-risk types of HPV, a common virus. It's done by analyzing a small sample of cells for the presence of HPV DNA. The aim is to identify any high-risk types early, as they may increase the risk of certain health issues.

4,696 services4,625 patients

Detection test by nucleic acid for chlamydia trachomatis, amplified probe technique 87491

A detection test by nucleic acid for chlamydia trachomatis, amplified probe technique, is a test that identifies the presence of a specific bacteria in the body. This bacteria can cause various health issues. The technique amplifies the sample to improve accuracy.

4,552 services3,502 patients

Detection test by nucleic acid for neisseria gonorrhoeae (gonorrhoeae bacteria), amplified probe technique 87591

This is a lab test that checks for the presence of a specific bacteria called Neisseria gonorrhoeae in your body. It uses a technique called amplified probe, which makes many copies of the bacteria's genetic material (nucleic acid) to help detect it more easily.

4,520 services3,470 patients

Detection test by nucleic acid for trichomonas vaginalis (genital parasite), amplified probe technique 87661

This is a test to identify a common microscopic organism that can cause discomfort. The technique involves using a special probe to amplify the organism's genetic material, making it easier to detect. It's a simple, safe, and accurate procedure.

4,316 services3,664 patients

Detection test by nucleic acid for multiple organisms, amplified probe(s) technique 87801

This is a test that identifies various microorganisms in your body using a method called amplified probe technique. It targets specific genetic material (nucleic acids) of the organisms, amplifying them for easy detection. This helps in diagnosing infections accurately.

3,675 services3,083 patients

Measurement of rna of bacteria in vaginal fluid specimen 81513

This is a lab test where a small sample of fluid is collected from the female body's lower region. The test measures the RNA (genetic material) of bacteria in the sample. This helps doctors understand the types and amounts of bacteria present, aiding in diagnosis and treatment.

3,603 services3,039 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

2,406 services1,286 patients

Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 87635

This is a lab test that detects the presence of COVID-19 in your body. It uses a technique to amplify the virus's genetic material, either DNA or RNA, making it easier to identify. A positive result indicates an active infection.

1,936 services865 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

1,711 services847 patients

Detection test by nucleic acid for hiv-1 virus, quantification 87536

This test identifies and measures the amount of HIV-1 virus in your body. It uses a technique called nucleic acid testing to find the virus's genetic material. This information helps monitor your health and manage treatment effectively.

1,538 services905 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

1,434 services385 patients

Cell examination of specimen, selective cellular enhancement technique 88112

Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.

1,380 services1,216 patients

Detection test by nucleic acid for hepatitis c virus, quantification 87522

This is a test that measures the amount of hepatitis C virus in your blood. It uses a method called nucleic acid testing to detect the virus's genetic material. This helps assess your disease status and monitor treatment effectiveness.

1,248 services1,144 patients

Pap test, automated thin layer preparation; automated system and manual rescreening 88175

A Pap test is a screening tool that helps detect unusual cells. The automated thin layer preparation involves placing your cell sample in a thin layer on a slide. An automated system then scans the slide, and experts manually review any areas flagged by the system. This method enhances the accuracy of the results.

869 services848 patients

Special stained specimen slides to identify organisms including interpretation and report 88312

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

830 services375 patients

Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, requiring interpretation by physician G0124

This is a routine health check where a sample of cells is collected from the lower region of the female reproductive system. The sample is preserved and prepared using automated technology for detailed examination. A doctor interprets the results to check for any abnormalities.

565 services562 patients

Detection test by nucleic acid for clostridium difficile, amplified probe technique 87493

A detection test by nucleic acid for Clostridium difficile using an amplified probe technique is a lab test that identifies the presence of the Clostridium difficile bacteria in your body. It uses a small sample, often stool, and a technique that amplifies the bacteria's genetic material to confirm its presence.

533 services506 patients

Detection test by nucleic acid for hepatitis b virus, quantification 87517

This test identifies the presence and measures the amount of Hepatitis B virus in your blood. It uses a technique called nucleic acid testing. The test helps in monitoring your infection and planning your treatment.

472 services376 patients

Detection test for candida species (yeast), direct probe technique 87480

The detection test for Candida species uses a direct probe technique. This is a lab test where a sample is taken from your body, typically from the mouth or skin. The sample is then examined under a microscope to identify the presence of Candida, a type of yeast that can cause infection.

409 services371 patients

Detection test for gardnerella vaginalis (bacteria), direct probe technique 87510

This test helps find a certain type of bacteria called Gardnerella vaginalis. The direct probe technique uses a small sample from your body. This sample is then examined in a lab to see if this bacteria is present. This helps in identifying and treating any related health issues.

405 services367 patients

Detection test by nucleic acid for trichomonas vaginalis (genital parasite), direct probe technique 87660

This test helps identify a common microscopic organism that can cause discomfort. It uses a direct probe technique, which involves analyzing a small sample from your body. The test detects the organism's unique genetic material (nucleic acid), confirming its presence.

403 services366 patients

Special stained specimen slides to examine tissue, each multiplex procedure 88344

Special stained specimen slides are used to study tissue in detail. This multiplex procedure involves applying different dyes to the tissue sample on a slide to highlight specific elements. These colors help identify any abnormalities in the tissue, aiding in accurate diagnosis and treatment planning.

378 services108 patients

Screening cytopathology, cervical or vaginal (any reporting system), collected in preservative fluid, automated thin layer preparation, screening by cytotechnologist under physician supervision G0123

This is a routine screening procedure where cells are collected from the lower female tract. The cells are placed in a special fluid, prepared in a thin layer for microscopic examination. This is done under the supervision of a medical professional to ensure accuracy.

308 services308 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

280 services134 patients

Pap test 88141

A Pap test is a routine exam that checks for changes in cells that could signal a health concern. During this test, a small sample of cells is gently collected from the lower region of the body. The sample is then examined under a microscope to ensure everything looks normal.

240 services221 patients

Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus 87637

This test identifies if you have COVID-19, influenza A or B, or respiratory syncytial virus. It uses a multiplex amplified probe technique, which amplifies and detects specific genetic material of the viruses, helping in accurate diagnosis.

239 services233 patients

Detection test by nucleic acid for human papillomavirus (hpv), types 16 and 18 only 87625

This test identifies specific types of HPV, a common virus, by examining your body's cells for the virus's genetic material. It's specifically designed to detect types 16 and 18, which are often associated with certain health risks. The procedure is safe and simple.

221 services217 patients

Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method G0416

This procedure involves taking a small tissue sample from your gland located beneath your bladder. The sample is then examined under a microscope by a pathologist to check for any abnormalities or diseases. This is a standard method to ensure your well-being.

197 services121 patients

Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19) and influenza virus types a and b 87636

This test detects the presence of SARS-CoV-2 (COVID-19) and Influenza types A and B in your body. It uses a method called the multiplex amplified probe technique to amplify and identify specific virus genes. It helps in early diagnosis and appropriate treatment.

170 services165 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

165 services131 patients

Infectious agent detection by nucleic acid (dna or rna); human papillomavirus (hpv), high-risk types (e.g., 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 68) for cervical cancer screening, must be performed in addition to pap test G0476

This service detects high-risk types of HPV, a common virus, by analyzing DNA or RNA. It's an essential part of cervical cancer screening, performed alongside the Pap test. This dual approach enhances accuracy, aiding early detection and treatment.

132 services132 patients

Detection test by nucleic acid for multiple types of respiratory virus, multiple types or subtypes, 3-5 targets 87631

This test identifies different respiratory viruses by examining their nucleic acid, the building blocks of their genetic material. It can detect multiple types or subtypes, specifically 3-5 targets. This helps in diagnosing your respiratory illness accurately.

128 services127 patients

Pap test, manual screening 88142

A Pap test is a routine procedure that checks for unusual changes in cells. During the manual screening, a small sample of cells is gently collected from the lower region of the body. These cells are then examined under a microscope to ensure your health.

100 services99 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.

91 services74 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

77 services41 patients

Detection test by nucleic acid for digestive tract pathogen, multiple types or subtypes, 6-11 targets 87506

This test identifies various pathogens in the digestive system by examining nucleic acids. It targets 6-11 different types or subtypes of these pathogens, helping to diagnose a range of potential illnesses.

70 services70 patients

Evaluation of fine needle aspirate with interpretation and report 88173

This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.

61 services49 patients

Pathology examination of tissue using a microscope, limited examination 88300

A pathology examination of tissue using a microscope is a procedure where a small sample of your tissue is observed under a microscope. This limited examination helps identify any abnormal cells or signs of disease, aiding in accurate diagnosis and treatment planning.

39 services27 patients

Detection test by nucleic acid for strep (streptococcus, group a), amplified probe technique 87651

This test detects Group A Streptococcus bacteria in your body. It uses an amplified probe technique, which amplifies the bacteria's nucleic acid, making it easier to identify. This test helps diagnose conditions like strep throat or scarlet fever.

34 services34 patients

Pathology examination of tissue using a microscope 88302

A pathology examination of tissue involves studying a small sample of your body's cells under a microscope. This helps identify any abnormalities or diseases, such as cancer. The process is crucial for accurate diagnosis and treatment planning.

24 services23 patients

Surgical pathology consultation and report on referred slides prepared elsewhere 88321

A surgical pathology consultation involves reviewing slides prepared at a different lab to confirm or clarify a diagnosis. It's a second opinion to ensure accuracy. A report with findings and interpretations is then provided for your doctor's reference.

20 services20 patients

Other Providers at the Same Location NPPES 10

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

LUCY H LIU M.D.

Pathology (Anatomic Pathology)