clia-laboratory-records

CLIA laboratories in California

23,386 laboratories hold an active CLIA certificate in California in the CMS file for Q2 2026 (latest record: Jun 29, 2026).

Credentialing a laboratory, checking a claim or a contract? A dated CLIA certificate report ($19) — or a whole list checked at once.

By certificate type

CertificateActive laboratories
Certificate of Waiver18,707
Certificate for Provider-Performed Microscopy (PPM)2,044
Certificate of Compliance1,237
Certificate of Accreditation1,155
Certificate of Registration243

By facility type

Facility typeActive laboratories
Physician Office8,854
Other2,869
Home Health Agency1,701
Pharmacy1,333
Skilled Nursing/Nursing Facility1,096
Ambulatory Surgery Center961
Hospice791
Independent Laboratory736
End Stage Renal Disease Dialysis702
Federally Qualified Health Center700
Hospital643
Community Clinic590
Assisted Living Facility368
Health Maintenance Organization312
Ancillary Test Site306
Other Practitioner265
Intermediate Care Facility/Individuals with Intellectual Disabilities213
Rural Health Clinic181
School/Student Health Service160
Comprehensive Outpatient Rehab144
Ambulance94
Mobile Lab93
Industrial82
Prison74
Public Health Laboratory56
Blood Bank31
Health Fair26
Tissue Bank/Repository5

By city

Smaller places of California — 1,229 laboratories.

City counts are the laboratories listed on this site; 2,272 more in California carry only a person's name and are found by search.