CLIA lab

CLIA 05D2323841: Optumserve - San Mateo County Lab Testsite, the

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

CLIA number 05D2323841 belongs to Optumserve - San Mateo County Lab Testsite, the in San Mateo, CA.

Certificate of Waiver, effective May 14, 2025, expires May 13, 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 Waiver
Certificate effective
May 14, 2025
Certificate expiration
May 13, 2027
Status in the CMS file
Active (termination code 00)
Original participation date
May 14, 2025
Facility type
Independent
Ownership (control type)
Proprietary
Lab classification
CLIA laboratory

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

Lab and contact

CLIA number
05D2323841
Lab name
Optumserve - San Mateo County Lab Testsite, the
Address
50 E 5th Ave, San Mateo, CA 94401
Phone
(210) 287-9763
Fax
(608) 793-2900

Annual test volume the lab reported

Waived tests
75,000

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

Other labs in San Mateo, CA

Related

Questions

What is the CLIA number for Optumserve - San Mateo County Lab Testsite, the in San Mateo?

05D2323841, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does Optumserve - San Mateo County Lab Testsite, the hold?

A Certificate of Waiver, according to the CMS file.

When does CLIA 05D2323841 expire?

The CMS file lists May 13, 2027 as the certificate expiration date; the certificate took effect May 14, 2025.

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