QUEST DIAGNOSTICS INCORPORATED MD
NPI 1245307818
Clinical Medical Laboratory in Baltimore, MD

Active since November 29, 2006CLIA 21D0218877 · Accreditation
1715 TWIN SPRINGS RD, BALTIMORE, MD 21227(800) 722-7393 Get Directions Write a Review

NPPES record last updated: March 13, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 13, 2025, Sep 20, 2022, Jul 21, 2020 and 4 more (7 updates tracked since 2017).

About Quest Diagnostics Incorporated Md NPPES

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

QUEST DIAGNOSTICS INCORPORATED MD (NPI 1245307818) is a healthcare organization registered as a clinical medical laboratory in Baltimore, Maryland and active in the NPI registry since November 2006. The organization holds an CLIA Accreditation certificate valid through October 19, 2026 and lists Leah D Timmerman, Vice President, as its authorized official.

NPPES Registry Identity

NPI1245307818
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS INCORPORATED MD
Location Address1715 TWIN SPRINGS RDBaltimore, MD 21227-3553
Mailing Address14275 Midway Rd Ste 400Addison, TX 75001-3661 · Fax (610) 271-4245
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialLeah D TimmermanVice President · (973) 520-2700
Enumeration DateNovember 29, 2006
Last NPPES UpdateMarch 13, 20257 updates tracked since enumeration
NPPES CertifiedMarch 13, 2025
NPI 1245307818 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
License Licensed in MD · 21D0218877
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.
1715 TWIN SPRINGS RD, Baltimore, MD 21227

Other Identifiers 2

Other406690079MD · Rr Mcr
Other21D0218877MD · Clia

Accepted 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 21D0218877

Quest Diagnostics Inc · Baltimore, MD
Active · expires Oct 19, 2026
CLIA Number21D0218877
Laboratory TypeIndependent
Certificate Effective DateOctober 20, 2024
Certificate Expiration DateOctober 19, 2026
Laboratory DirectorDr. Andrew S. Edelman
Laboratory Phone(410) 314-1531
Laboratory LocationQuest Diagnostics Inc1715 Twin Springs Rd, Baltimore, MD 21227
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 504

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.

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.
268,262 services135,779 patients
Blood test, comprehensive group of blood chemicals 80053
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
213,703 services130,129 patients
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.
175,715 services110,870 patients
Blood test, lipids (cholesterol and triglycerides) 80061
A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.
155,554 services113,071 patients
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.
120,486 services79,703 patients
Blood test, thyroid stimulating hormone (tsh) 84443
A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.
114,191 services85,842 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 Incorporated MD's NPI number?

The NPI number for Quest Diagnostics Incorporated MD is 1245307818. It was assigned to this organization in the NPPES registry on November 29, 2006.

Where is Quest Diagnostics Incorporated MD located?

Quest Diagnostics Incorporated MD is located at 1715 Twin Springs Rd, Baltimore, MD 21227. The listed phone number is (800) 722-7393.

What is Quest Diagnostics Incorporated MD's specialty?

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

Does Quest Diagnostics Incorporated MD hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 21D0218877) is associated with this NPI, valid through October 19, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Quest Diagnostics Incorporated MD accept?

Health plans from Blue Cross and Blue Shield of Alabama, Blue Cross and Blue Shield of Kansas, Inc., Blue Cross and Blue Shield of NC, BlueCross BlueShield of South Carolina and First Choice Next and 8 other insurers list Quest Diagnostics Incorporated MD as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Quest Diagnostics Incorporated MD was last updated on March 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.