#1Priority Science Labs
Based in Westminster, CA
Clinical & Reference Laboratories in Westminster, CA
The top-ranked clinical laboratories serving Westminster, CA are Priority Science Labs, Sterling Pathology National Laboratories and Diagnostic Laboratory Science Inc. We list 391 clinical laboratories serving Westminster, CA. 30 of the providers shown match an active record from Centers for Medicare & Medicaid Services, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical & Reference Laboratories serving Westminster, CA (Orange County). 391 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical laboratories for Westminster
#2Sterling Pathology National Laboratories
Based in Westminster, CA#3Diagnostic Laboratory Science Inc
Serves this area from Garden Grove, CA (2 mi)#4Weisenthal Cancer Group
Serves this area from Huntington Beach, CA (2 mi)#5Orange County Labs Inc
Serves this area from Huntington Beach, CA (3 mi)#6Bio Path Medical Group Inc
Serves this area from Fountain Valley, CA (4 mi)#7Lab Genomics, LLC
Serves this area from Fountain Valley, CA (4 mi)#8Consolidated Medical Bio-analysis Inc
Serves this area from Cypress, CA (5 mi)#9Altasciences Los Angeles
Serves this area from Cypress, CA (5 mi)#10Bio-path Medical Group Inc
Serves this area from Fountain Valley, CA (5 mi)
20 more providers serving this area
- Sterling Pathology National Laboratories, Seal Beach, CA (5 mi)
- Biogene Diagnostics, Los Alamitos, CA (5 mi)
- New World Clinical Laboratory, Inc, Los Alamitos, CA (5 mi)
- Caris Mpi, Inc, Buena Park, CA (5 mi)
- Advanced Biomedical, Inc, Santa Ana, CA (5 mi)
- Q Diagnostics Inc, Santa Ana, CA (6 mi)
- Pathology Associates Laboratory, Anaheim, CA (6 mi)
- Lifequest Diagnostic, Inc, Anaheim, CA (7 mi)
- Uc Irvine Dermatopathology Laboratory, Orange, CA (7 mi)
- Planned Parenthood, Anaheim, CA (7 mi)
- Altera Laboratory Services, LLC, Santa Ana, CA (7 mi)
- Corazon C Medina, Md Inc, Anaheim, CA (7 mi)
- Oc Gastrocare, Anaheim, CA (7 mi)
- Genetics Center, Orange, CA (8 mi)
- Newport Harbor Pathology, Orange, CA (8 mi)
- Unilab Corporation DBA Quest Diagnostics, Orange, CA (8 mi)
- Laboratory Services, LLC, Costa Mesa, CA (8 mi)
- Mountain View Medical Laboratory - Orange, Orange, CA (8 mi)
- South West Science Labs, LLC, Costa Mesa, CA (8 mi)
- Genex Laboratory, Costa Mesa, CA (9 mi)
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Frequently asked questions
How many clinical laboratories serve Westminster?
We list 391 clinical laboratories serving Westminster, CA: 2 based there and 389 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical laboratories serve Westminster?
The top-ranked clinical laboratories serving Westminster, CA are Priority Science Labs, Sterling Pathology National Laboratories, Diagnostic Laboratory Science Inc, Weisenthal Cancer Group and Orange County Labs Inc. The full ranked list, with the official records each provider matched, is on this page.
Which clinical laboratories serving Westminster are verified against official records?
10 of the top 10 match an active official record: Priority Science Labs (Centers for Medicare & Medicaid Services), Sterling Pathology National Laboratories (Centers for Medicare & Medicaid Services), Diagnostic Laboratory Science Inc (Centers for Medicare & Medicaid Services), Weisenthal Cancer Group (Centers for Medicare & Medicaid Services) and Orange County Labs Inc (Centers for Medicare & Medicaid Services), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What does CLIA certification mean?
CLIA certificates are issued under federal law for laboratories testing human specimens. A certificate of compliance or accreditation covers moderate and high complexity testing; a certificate of waiver covers only simple waived tests.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .