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

QUEST DIAGNOSTICS CLINICAL LABORATORIES INC
NPI 1306636113
Clinical Medical Laboratory in Elsa, TX

Active since May 07, 2025CLIA 45D2323189 · Waiver
119 RETAMA ST STE D, ELSA, TX 78543(956) 262-9940 Get Directions Write a Review

NPPES record last updated: September 4, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 4, 2026, May 7, 2025 (2 updates tracked since 2025).

About Quest Diagnostics Clinical Laboratories Inc NPPES

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

QUEST DIAGNOSTICS CLINICAL LABORATORIES INC (NPI 1306636113) is a healthcare organization registered as a clinical medical laboratory in Elsa, Texas and active in the NPI registry since May 2025. The organization holds a CLIA Waiver certificate valid through May 1, 2027 and lists Leah D Timmerman, Vp, as its authorized official.

NPPES Registry Identity

NPI1306636113
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameQUEST DIAGNOSTICS CLINICAL LABORATORIES INC
Location Address119 RETAMA ST STE DElsa, TX 78543-3004
Mailing Address4770 Regent BlvdIrving, TX 75063-2445 · (866) 697-8378 · Fax (610) 271-4245
Organization SubpartYesParent: Quest Diagnostics Incorporated
Authorized OfficialLeah D TimmermanVp · (973) 520-2700
Enumeration DateMay 7, 2025
Last NPPES UpdateSeptember 4, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 4, 2026
✔ NPI 1306636113 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.
119 RETAMA ST STE D, Elsa, TX 78543

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 45D2323189

Quest Diagnostic Clinical Laboratories, Inc · Elsa, TX
Active · expires May 1, 2027
CLIA Number45D2323189
Laboratory TypePoint Of Care Lab
Certificate Effective DateMay 2, 2025
Certificate Expiration DateMay 1, 2027
Laboratory DirectorRamona Adekunmisi
Laboratory Phone(956) 262-9940
Laboratory LocationQuest Diagnostic Clinical Laboratories, Inc119 Retama Street Ste D, Elsa, TX 78543
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Clinical Laboratories Inc's NPI number?

The NPI number for Quest Diagnostics Clinical Laboratories Inc is 1306636113. It was assigned to this organization in the NPPES registry on May 7, 2025.

Where is Quest Diagnostics Clinical Laboratories Inc located?

Quest Diagnostics Clinical Laboratories Inc is located at 119 Retama St Ste D, Elsa, TX 78543. The listed phone number is (956) 262-9940.

What is Quest Diagnostics Clinical Laboratories Inc's specialty?

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

Does Quest Diagnostics Clinical Laboratories Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2323189) is associated with this NPI, valid through May 1, 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 Clinical Laboratories Inc was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 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.