CLIA lab

CLIA 05D0552553: Unilab Corporation DBA Quest Diagnostics

Redlands, CA. Certificate and address details from the CMS Provider of Services file for clinical laboratories.

CLIA number 05D0552553 belongs to Unilab Corporation DBA Quest Diagnostics in Redlands, CA.

Certificate of Accreditation, effective May 26, 2025, expires May 25, 2027.

Active in the CMS Provider of Services file posted October 16, 2026.

Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page

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Certificate

Certificate type
Certificate of Accreditation
Certificate effective
May 26, 2025
Certificate expiration
May 25, 2027
Status in the CMS file
Active (termination code 00)
Original participation date
September 1, 1992
Facility type
Independent
Ownership (control type)
Proprietary
Lab classification
CLIA laboratory
Accrediting organizations
College of American Pathologists (CAP)
Directly affiliated labs
1

Source: CMS Provider of Services File, Clinical Laboratories (CLIA), as of October 16, 2026. Publisher page

Lab and contact

CLIA number
05D0552553
Lab name
Unilab Corporation DBA Quest Diagnostics
Address
245 Terracina Blvd Ste 104B, Redlands, CA 92373
Phone
(909) 335-6328
Fax
(909) 793-1281

Annual test volume the lab reported

Waived tests
1,500
Tests under accreditation
139,397
Total
140,897

Volumes are what the lab reported to CMS on its CMS-116 application, as carried in the file.

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Questions

What is the CLIA number for Unilab Corporation DBA Quest Diagnostics in Redlands?

05D0552553, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does Unilab Corporation DBA Quest Diagnostics hold?

A Certificate of Accreditation, according to the CMS file.

When does CLIA 05D0552553 expire?

The CMS file lists May 25, 2027 as the certificate expiration date; the certificate took effect May 26, 2025.

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