Hospital rankings

Hospitals in Wisconsin with the lowest CABG surgery death rate

18 Wisconsin hospitals ranked by CABG surgery death rate in the 2026 Medicare (CMS) data. Leading: SSM Health St Mary's Hospital - Madison, St Vincent Hospital, SSM Health St Agnes Hospital-Fond Du Lac. Filter by type, ownership and size, choose the measures you care about, and sort by any column.

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18 hospitals ranked in Wisconsin by cabg surgery death rate; 122 more match but have no reported value.

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Hospital rankings, page 1 of 1. Columns can be sorted.
#	Hospital	CABG surgery death ratelower is better	Heart attack death ratelower is better	Heart failure death ratelower is better	Pneumonia death ratelower is better	COPD death ratelower is better	Stroke death ratelower is better	Hospital-wide readmission ratelower is better · 2025 data	Compare
	National average	2.4%	11.9%	11.1%	15.2%	8.6%	11.9%	15.0%
1	SSM Health St Mary's Hospital - MadisonMadison, WI · Acute care	1.5%, 96th percentile	10.3%, 92nd percentile	14.5%, 5th percentile	17.0%, 24th percentile	10.4%, 11th percentile	9.6%, 86th percentile	14.4%, 83rd percentile	Compare SSM Health St Mary's Hospital - Madison
2	St Vincent HospitalGreen Bay, WI · Acute care	1.6%, 93rd percentile	11.6%, 58th percentile	15.2%, 3rd percentile	16.2%, 35th percentile	8.6%, 46th percentile	14.6%, 13th percentile	14.0%, 93rd percentile	Compare St Vincent Hospital
3	SSM Health St Agnes Hospital-Fond Du LacFond Du Lac, WI · Acute care	1.9%, 78th percentile	10.8%, 83rd percentile	15.5%, 2nd percentile	16.2%, 35th percentile	9.3%, 28th percentile	9.8%, 84th percentile	15.0%, 46th percentile	Compare SSM Health St Agnes Hospital-Fond Du Lac
T4	Aurora Medical CenterGrafton, WI · Acute care	2.0%, 69th percentile	11.4%, 65th percentile	9.1%, 85th percentile	14.1%, 67th percentile	6.4%, 96th percentile	11.0%, 62nd percentile	14.7%, 68th percentile	Compare Aurora Medical Center
T4	Aspirus Wausau HospitalWausau, WI · Acute care	2.0%, 69th percentile	11.8%, 49th percentile	11.8%, 34th percentile	14.8%, 56th percentile	9.7%, 20th percentile	10.0%, 81st percentile	14.1%, 91st percentile	Compare Aspirus Wausau Hospital
T4	Bellin Memorial HospitalGreen Bay, WI · Acute care	2.0%, 69th percentile	11.5%, 62nd percentile	15.1%, 3rd percentile	18.9%, 9th percentile	11.3%, 4th percentile	8.7%, 95th percentile	14.2%, 89th percentile	Compare Bellin Memorial Hospital
T4	Waukesha Memorial HospitalWaukesha, WI · Acute care	2.0%, 69th percentile	12.4%, 29th percentile	10.6%, 58th percentile	17.1%, 23rd percentile	8.1%, 61st percentile	11.0%, 62nd percentile	15.5%, 19th percentile	Compare Waukesha Memorial Hospital
8	University Of Wisconsin Hospitals & Clinics AuthorityMadison, WI · Acute care	2.1%, 62nd percentile	11.6%, 58th percentile	8.5%, 91st percentile	9.3%, 99th percentile	6.8%, 91st percentile	10.7%, 68th percentile	14.2%, 89th percentile	Compare University Of Wisconsin Hospitals & Clinics Authority
T9	Mayo Clinic Health System Eau Claire HospitalEau Claire, WI · Acute care	2.3%, 49th percentile	10.3%, 92nd percentile	12.0%, 30th percentile	12.7%, 85th percentile	7.0%, 88th percentile	9.9%, 82nd percentile	13.6%, 97th percentile	Compare Mayo Clinic Health System Eau Claire Hospital
T9	Aurora St Lukes Medical CenterMilwaukee, WI · Acute care	2.3%, 49th percentile	10.9%, 80th percentile	10.1%, 68th percentile	10.7%, 97th percentile	7.5%, 78th percentile	10.4%, 73rd percentile	15.4%, 23rd percentile	Compare Aurora St Lukes Medical Center
T11	Aurora BayCare Medical CenterGreen Bay, WI · Acute care	2.4%, 44th percentile	12.2%, 35th percentile	12.8%, 18th percentile	14.2%, 66th percentile	7.7%, 72nd percentile	11.6%, 51st percentile	14.9%, 54th percentile	Compare Aurora BayCare Medical Center
T11	Froedtert Memorial Lutheran HospitalMilwaukee, WI · Acute care	2.4%, 44th percentile	10.7%, 85th percentile	9.5%, 79th percentile	12.8%, 84th percentile	6.5%, 95th percentile	9.7%, 85th percentile	15.4%, 23rd percentile	Compare Froedtert Memorial Lutheran Hospital
13	Froedtert South Inc.Kenosha, WI · Acute care	2.5%, 38th percentile	13.2%, 11th percentile	14.9%, 4th percentile	13.2%, 80th percentile	10.2%, 12th percentile	15.2%, 11th percentile	15.3%, 28th percentile	Compare Froedtert South Inc.
14	Gundersen Lutheran Medical CenterLa Crosse, WI · Acute care	2.6%, 33rd percentile	12.6%, 23rd percentile	12.8%, 18th percentile	13.0%, 82nd percentile	8.6%, 46th percentile	12.2%, 40th percentile	13.9%, 94th percentile	Compare Gundersen Lutheran Medical Center
T15	Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute care	2.7%, 28th percentile	12.3%, 32nd percentile	10.4%, 62nd percentile	13.8%, 72nd percentile	7.9%, 66th percentile	9.5%, 88th percentile	13.7%, 97th percentile	Compare Ascension Columbia St Marys Hospital Milwaukee
T15	Marshfield Medical CenterMarshfield, WI · Acute care	2.7%, 28th percentile	12.5%, 26th percentile	11.5%, 39th percentile	13.7%, 73rd percentile	7.2%, 85th percentile	11.0%, 62nd percentile	16.9%, 1st percentile	Compare Marshfield Medical Center
17	Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute care	3.1%, 16th percentile	11.9%, 46th percentile	17.5%, 0th percentile	15.9%, 39th percentile	9.4%, 26th percentile	15.0%, 12th percentile	13.1%, 99th percentile	Compare Thedacare Regional Medical Center - Appleton Inc
18	Mercy Health System CorpJanesville, WI · Acute care	4.6%, 2nd percentile	13.3%, 10th percentile	9.2%, 84th percentile	13.9%, 70th percentile	8.9%, 38th percentile	12.7%, 33rd percentile	15.1%, 40th percentile	Compare Mercy Health System Corp

About these rankings

Rankings use the 2026 release of CMS Care Compare data. Hospitals share a rank (“T”) when their values are equal, and only hospitals with a reported value for the sorted measure are ranked. Shading compares each value with every hospital in the country, so it doesn’t change with your filters. Small differences are often not statistically meaningful; use the methodology and glossary for context.

CABG surgery death rate: 30-day death rate for CABG surgery patients.
Heart attack death rate: 30-day death rate for heart attack patients.
Heart failure death rate: 30-day death rate for heart failure patients.
Pneumonia death rate: 30-day death rate for pneumonia patients.
COPD death rate: 30-day death rate for COPD patients.
Stroke death rate: 30-day death rate for stroke patients.
Hospital-wide readmission rate: Rate of unplanned readmission within 30 days, all conditions. From 2025 CMS reports the Hybrid Hospital-Wide Readmission measure (claims plus EHR data), which replaced the claims-only measure; values are close but not strictly comparable across the change. CMS suppressed it for 2026.. Latest available: 2025 release.