CLIA lab

CLIA 05D0666012: Young J Ko MD

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

CLIA number 05D0666012 belongs to Young J Ko MD in Lancaster, CA.

Certificate of Accreditation, effective December 23, 2025, expires December 22, 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
December 23, 2025
Certificate expiration
December 22, 2027
Status in the CMS file
Active (termination code 00)
Original participation date
September 1, 1992
Facility type
Physician office
Ownership (control type)
Proprietary
Lab classification
CLIA laboratory
Accrediting organizations
COLA

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

Lab and contact

CLIA number
05D0666012
Lab name
Young J Ko MD
Address
44215 15th St West, Ste 303, Lancaster, CA 93534
Phone
(661) 945-0723
Fax
(661) 949-5740

Annual test volume the lab reported

Waived tests
117
Tests under accreditation
450
Total
567

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 Young J Ko MD in Lancaster?

05D0666012, per the CMS Provider of Services file posted October 16, 2026.

What CLIA certificate does Young J Ko MD hold?

A Certificate of Accreditation, according to the CMS file.

When does CLIA 05D0666012 expire?

The CMS file lists December 22, 2027 as the certificate expiration date; the certificate took effect December 23, 2025.

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