In 2024, 22 clinical laboratories billed Medicare for laboratory testing in Wisconsin: 2,922,871 services and an estimated $339.4M in Medicare payments. Below: the top 5 by service volume, straight from CMS's public billing data.
Ranked by 2024 Medicare service volume across the family's codes.
| # | Provider | Specialty | City | Services | Est. Medicare paid |
|---|---|---|---|---|---|
| 1 | A2Cl Services, LLC | Clinical Laboratory | West Allis | 1,639,818 | $20.5M |
| 2 | Exact Sciences Laboratories, LLC | Clinical Laboratory | Madison | 614,504 | $306.4M |
| 3 | Wisconsin Diagnostic Laboratories LLC | Clinical Laboratory | Milwaukee | 203,304 | $2.3M |
| 4 | Froedtert &The Medical College Of Wisconsin Community Physicians, Inc. | Clinical Laboratory | Menomonee Falls | 131,192 | $1.2M |
| 5 | Consultants Laboratory Of Wisconsin, LLC | Clinical Laboratory | Fond Du Lac | 105,317 | $1.1M |
The same 2024 Medicare data, sliced by city: the biggest laboratory testing cities by number of laboratories, in est.-Medicare-paid order.
In 2024 the top city for laboratory testing in Wisconsin by est. Medicare paid was Madison: 3 clinical laboratories billed 667,113 services for an estimated $310.4M, led by Exact Sciences Laboratories, LLC, with 614,504 services (est. $306.4M Medicare paid).
| # | City | Laboratories | Services | Est. Medicare paid | City leader (2024) |
|---|---|---|---|---|---|
| 1 | Madison | 3 | 667,113 | $310.4M | Exact Sciences Laboratories, LLC · 614,504 services · est. $306.4M |
| 2 | West Allis | 1 | 1,639,818 | $20.5M | — |
| 3 | Milwaukee | 7 | 222,777 | $2.7M | Wisconsin Diagnostic Laboratories LLC · 203,304 services · est. $2.3M |
| 4 | Menomonee Falls | 1 | 131,192 | $1.2M | — |
| 5 | Brookfield | 2 | 23,810 | $1.1M | — |
City totals are cut from the same public CMS data as everything above: Medicare fee-for-service only, after CMS's under-11-beneficiary suppression, dollars always est. Medicare paid. Where a city shows fewer than 3 laboratories, we show the totals and name no one. Naming is capped by design: up to 5 ranked laboratories above plus at most one leader per city here, and no one else on this page.
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