Clinical & Reference Laboratories in Greenfield, WI

The top-ranked clinical laboratories serving Greenfield, WI are A2cl Aurora Health Center - Edgerton, Ascension St Francis Hospital and Quest Diagnostics - Milwaukee Rrl. We list 31 clinical laboratories serving Greenfield, WI. 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 Greenfield, WI (Milwaukee County). 31 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 Greenfield

Ranked by our published methodology. Sponsored providers are shown separately.
#ProviderVerified recordsBased inPhone
1A2cl Aurora Health Center - EdgertonCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0665264
Greenfield, WI(414) 423-5163
2Ascension St Francis HospitalCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0391842
Milwaukee, WI (4 mi)(414) 647-7400
3Quest Diagnostics - Milwaukee RrlCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D2188290
Milwaukee, WI (4 mi)(414) 203-3156
4Horizon Healthcare, IncCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D2096656
Milwaukee, WI (5 mi)(414) 376-5527
5A2cl Aurora Health Center - New BerlinCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0880249
New Berlin, WI (5 mi)(262) 827-6798
6Froedtert & Mcw Moorland Reserve LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D2066480
New Berlin, WI (5 mi)(262) 798-7335
7Wisconsin Diagnostic Laboratories, LLCCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0391886
Wauwatosa, WI (6 mi)(414) 805-7602
8Laboratory Corporation Of AmericaCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D2269223
Oak Creek, WI (6 mi)(262) 656-6087
9Allergy Immunology Diagnostic Lab CenterCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0869645
Wauwatosa, WI (6 mi)(414) 955-4931
10Clinical Immunodiagnostic And Research LaboratoryCLIA-certified laboratory (certificate of compliance or accreditation, CMS)#52D0665375
Wauwatosa, WI (6 mi)(414) 955-4165
20 more providers serving this area

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Frequently asked questions

How many clinical laboratories serve Greenfield?

We list 31 clinical laboratories serving Greenfield, WI: 1 based there and 30 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 Greenfield?

The top-ranked clinical laboratories serving Greenfield, WI are A2cl Aurora Health Center - Edgerton, Ascension St Francis Hospital, Quest Diagnostics - Milwaukee Rrl, Horizon Healthcare, Inc and A2cl Aurora Health Center - New Berlin. The full ranked list, with the official records each provider matched, is on this page.

Which clinical laboratories serving Greenfield are verified against official records?

10 of the top 10 match an active official record: A2cl Aurora Health Center - Edgerton (Centers for Medicare & Medicaid Services), Ascension St Francis Hospital (Centers for Medicare & Medicaid Services), Quest Diagnostics - Milwaukee Rrl (Centers for Medicare & Medicaid Services), Horizon Healthcare, Inc (Centers for Medicare & Medicaid Services) and A2cl Aurora Health Center - New Berlin (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 .

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