Hospital rankings
Hospitals in Wisconsin with the lowest serious complications
63 Wisconsin hospitals ranked by serious complications in the 2026 Medicare (CMS) data. Leading: Mayo Clinic Health System Eau Claire Hospital, Froedtert Memorial Lutheran Hospital, Aurora Medical Center Oshkosh. Filter by type, ownership and size, choose the measures you care about, and sort by any column.
| # | Hospital | Serious complicationslower is better | Central line bloodstream infectionslower is better | Catheter-associated urinary tract infectionslower is better | Surgical site infections (colon)lower is better | Surgical site infections (hysterectomy)lower is better | MRSA bloodstream infectionslower is better | C. diff infectionslower is better | Compare |
|---|---|---|---|---|---|---|---|---|---|
| National average | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | ||
| 1 | Mayo Clinic Health System Eau Claire Hospital | 0.68, 99th percentile | 0.33, 64th percentile | 1.10, 10th percentile | 1.11, 27th percentile | — | 0.56, 54th percentile | 0.39, 35th percentile | Compare Mayo Clinic Health System Eau Claire Hospital |
| 2 | Froedtert Memorial Lutheran Hospital | 0.78, 95th percentile | 0.68, 33rd percentile | 0.40, 51st percentile | 1.23, 23rd percentile | 1.62, 24th percentile | 0.92, 25th percentile | 0.59, 18th percentile | Compare Froedtert Memorial Lutheran Hospital |
| 3 | Aurora Medical Center Oshkosh | 0.82, 90th percentile | 0.00, 90th percentile | 0.00, 88th percentile | — | — | — | 0.49, 25th percentile | Compare Aurora Medical Center Oshkosh |
| 4 | UnityPoint Health - Meriter | 0.83, 89th percentile | 0.31, 65th percentile | 0.36, 54th percentile | 1.61, 12th percentile | 2.21, 11th percentile | 0.16, 80th percentile | 0.67, 14th percentile | Compare UnityPoint Health - Meriter |
| T5 | Mayo Clinic Health System-Franciscan Medical Center Inc | 0.85, 85th percentile | 0.00, 90th percentile | 0.00, 88th percentile | 0.62, 56th percentile | — | 0.00, 91st percentile | 0.55, 21st percentile | Compare Mayo Clinic Health System-Franciscan Medical Center Inc |
| T5 | Community Memorial Hospital | 0.85, 85th percentile | 0.00, 90th percentile | 0.49, 41st percentile | 1.63, 11th percentile | — | 0.00, 91st percentile | 0.23, 58th percentile | Compare Community Memorial Hospital |
| 7 | Ascension All Saints Hospital | 0.86, 83rd percentile | 1.74, 4th percentile | 0.45, 45th percentile | 0.74, 48th percentile | — | 0.00, 91st percentile | 0.62, 17th percentile | Compare Ascension All Saints Hospital |
| T8 | Aurora Medical Center Sheboygan County | 0.87, 81st percentile | 0.00, 90th percentile | 2.02, 1st percentile | 1.38, 18th percentile | — | 0.00, 91st percentile | 0.44, 29th percentile | Compare Aurora Medical Center Sheboygan County |
| T8 | Madison VA Medical Center | 0.87, 81st percentile | 0.51, 48th percentile | 1.61, 3rd percentile | — | — | — | — | Compare Madison VA Medical Center |
| T8 | Orthopaedic Hospital Of Wisconsin | 0.87, 81st percentile | — | — | — | — | — | — | Compare Orthopaedic Hospital Of Wisconsin |
| T11 | Oconomowoc Memorial Hospital | 0.88, 78th percentile | — | — | — | — | — | 0.45, 28th percentile | Compare Oconomowoc Memorial Hospital |
| T11 | SSM Health St Mary's Hospital - Janesville | 0.88, 78th percentile | — | — | — | — | — | 0.66, 14th percentile | Compare SSM Health St Mary's Hospital - Janesville |
| T13 | Aurora Lakeland Medical Center | 0.89, 75th percentile | — | — | — | — | — | 0.80, 10th percentile | Compare Aurora Lakeland Medical Center |
| T13 | Marshfield Medical Center - Minocqua | 0.89, 75th percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Marshfield Medical Center - Minocqua |
| T15 | Aurora Medical Center Bay Area | 0.90, 73rd percentile | — | — | — | — | — | 0.32, 44th percentile | Compare Aurora Medical Center Bay Area |
| T15 | SSM Health St Mary's Hospital - Madison | 0.90, 73rd percentile | 0.17, 75th percentile | 0.16, 71st percentile | 1.19, 24th percentile | 0.00, 89th percentile | 0.65, 45th percentile | 0.25, 54th percentile | Compare SSM Health St Mary's Hospital - Madison |
| T15 | Waukesha Memorial Hospital | 0.90, 73rd percentile | 0.00, 90th percentile | 0.16, 71st percentile | 1.22, 23rd percentile | — | 0.45, 64th percentile | 0.31, 46th percentile | Compare Waukesha Memorial Hospital |
| T15 | Aspirus Riverview Hospital & Clinics Inc | 0.90, 73rd percentile | — | 0.00, 88th percentile | — | — | — | 0.17, 65th percentile | Compare Aspirus Riverview Hospital & Clinics Inc |
| 19 | Watertown Memorial Hospital | 0.91, 70th percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Watertown Memorial Hospital |
| T20 | Ascension SE Wisconsin Hospital | 0.93, 63rd percentile | 0.20, 74th percentile | 0.00, 88th percentile | 0.18, 80th percentile | — | 0.00, 91st percentile | 0.32, 44th percentile | Compare Ascension SE Wisconsin Hospital |
| T20 | Aurora Medical Center - Summit | 0.93, 63rd percentile | 0.72, 30th percentile | 0.31, 59th percentile | 1.77, 9th percentile | — | 0.00, 91st percentile | 0.20, 62nd percentile | Compare Aurora Medical Center - Summit |
| T20 | The Monroe Clinic | 0.93, 63rd percentile | — | — | 0.77, 46th percentile | — | — | 0.37, 38th percentile | Compare The Monroe Clinic |
| T20 | St Nicholas Hospital | 0.93, 63rd percentile | — | — | — | — | — | 0.42, 31st percentile | Compare St Nicholas Hospital |
| T20 | Oakleaf Surgical Hospital | 0.93, 63rd percentile | — | — | — | — | — | — | Compare Oakleaf Surgical Hospital |
| T25 | Ascension Columbia St Marys Hospital Milwaukee | 0.94, 59th percentile | 0.29, 67th percentile | 0.40, 51st percentile | 1.17, 25th percentile | — | 0.34, 72nd percentile | 0.51, 24th percentile | Compare Ascension Columbia St Marys Hospital Milwaukee |
| T25 | Holy Family Memorial | 0.94, 59th percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Holy Family Memorial |
| T25 | Midwest Orthopedic Specialty Hospital | 0.94, 59th percentile | — | — | — | — | — | — | Compare Midwest Orthopedic Specialty Hospital |
| T28 | Aurora Medical Center Manitowoc County | 0.95, 55th percentile | — | — | — | — | — | 0.31, 45th percentile | Compare Aurora Medical Center Manitowoc County |
| T28 | Aurora Medical Center Washington County | 0.95, 55th percentile | — | — | — | — | — | 1.01, 5th percentile | Compare Aurora Medical Center Washington County |
| T28 | Aurora Memorial Hospital Burlington | 0.95, 55th percentile | 0.80, 26th percentile | 1.87, 2nd percentile | — | — | — | 1.10, 4th percentile | Compare Aurora Memorial Hospital Burlington |
| T28 | Marshfield Medical Center - Beaver Dam (MMC-BD) | 0.95, 55th percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Marshfield Medical Center - Beaver Dam (MMC-BD) |
| T32 | Ascension St Francis Hospital | 0.96, 51st percentile | — | — | — | — | — | 0.82, 9th percentile | Compare Ascension St Francis Hospital |
| T32 | Aspirus Divine Savior Hospital | 0.96, 51st percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Aspirus Divine Savior Hospital |
| T34 | Aspirus Wausau Hospital | 0.97, 46th percentile | 0.00, 90th percentile | 0.46, 43rd percentile | 0.29, 76th percentile | — | 0.71, 41st percentile | 0.38, 36th percentile | Compare Aspirus Wausau Hospital |
| T34 | Fort Memorial Hospital | 0.97, 46th percentile | — | — | — | — | — | 0.53, 22nd percentile | Compare Fort Memorial Hospital |
| T34 | Mile Bluff Medical Center | 0.97, 46th percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Mile Bluff Medical Center |
| 37 | SSM Health St Clare Hospital - Baraboo | 0.98, 41st percentile | — | — | — | — | — | 0.00, 90th percentile | Compare SSM Health St Clare Hospital - Baraboo |
| T38 | Sauk Prairie Hospital | 1.01, 33rd percentile | — | — | — | — | — | 0.00, 90th percentile | Compare Sauk Prairie Hospital |
| T38 | Aurora BayCare Medical Center | 1.01, 33rd percentile | 1.40, 7th percentile | 0.40, 50th percentile | 0.89, 37th percentile | 1.73, 20th percentile | 0.43, 65th percentile | 0.91, 7th percentile | Compare Aurora BayCare Medical Center |
| T40 | West Allis Memorial Hospital | 1.03, 29th percentile | 0.84, 24th percentile | 1.28, 7th percentile | 1.28, 21st percentile | — | 0.95, 23rd percentile | 0.17, 66th percentile | Compare West Allis Memorial Hospital |
| T40 | Aspirus Rhinelander Hospital | 1.03, 29th percentile | — | — | — | — | — | 0.80, 9th percentile | Compare Aspirus Rhinelander Hospital |
| 42 | University Of Wisconsin Hospitals & Clinics Authority | 1.04, 28th percentile | 0.59, 40th percentile | 0.48, 41st percentile | 1.52, 14th percentile | 0.41, 74th percentile | 0.71, 41st percentile | 0.61, 17th percentile | Compare University Of Wisconsin Hospitals & Clinics Authority |
| T43 | Aurora Medical Center | 1.05, 26th percentile | 0.00, 90th percentile | 0.49, 41st percentile | 1.18, 24th percentile | — | 0.59, 51st percentile | 0.91, 7th percentile | Compare Aurora Medical Center |
| T43 | Gundersen Lutheran Medical Center | 1.05, 26th percentile | 1.03, 14th percentile | 0.82, 19th percentile | 0.59, 58th percentile | — | 0.30, 74th percentile | 0.22, 59th percentile | Compare Gundersen Lutheran Medical Center |
| 45 | SSM Health St Agnes Hospital-Fond Du Lac | 1.06, 25th percentile | 0.98, 17th percentile | 0.00, 88th percentile | 0.00, 91st percentile | — | 0.00, 91st percentile | 0.29, 49th percentile | Compare SSM Health St Agnes Hospital-Fond Du Lac |
| 46 | Marshfield Medical Center - Eau Claire | 1.07, 23rd percentile | — | — | 1.53, 13th percentile | — | — | 2.10, 1st percentile | Compare Marshfield Medical Center - Eau Claire |
| 47 | Thedacare Regional Medical Center - Neenah | 1.08, 22nd percentile | 0.00, 90th percentile | 0.30, 60th percentile | 0.45, 67th percentile | — | 0.00, 91st percentile | 0.73, 12th percentile | Compare Thedacare Regional Medical Center - Neenah |
| 48 | Aurora St Lukes Medical Center | 1.09, 20th percentile | 0.83, 24th percentile | 0.71, 24th percentile | 1.40, 17th percentile | 0.58, 67th percentile | 0.59, 51st percentile | 0.55, 21st percentile | Compare Aurora St Lukes Medical Center |
| 49 | Marshfield Medical Center - Rice Lake | 1.13, 16th percentile | — | — | — | — | — | 0.74, 11th percentile | Compare Marshfield Medical Center - Rice Lake |
| 50 | Marshfield Medical Center - Weston | 1.15, 14th percentile | 0.00, 90th percentile | 1.43, 5th percentile | 0.53, 62nd percentile | — | — | 0.26, 53rd percentile | Compare Marshfield Medical Center - Weston |
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.
- Serious complications
- Patient safety and adverse events composite (PSI 90; 1.0 = national value).
- Central line bloodstream infections
- Central line-associated bloodstream infections (CLABSI) in ICUs and select wards (standardized infection ratio; 1.0 = national baseline).
- Catheter-associated urinary tract infections
- Catheter-associated urinary tract infections (CAUTI) in ICUs and select wards (standardized infection ratio; 1.0 = national baseline).
- Surgical site infections (colon)
- Surgical site infections from colon surgery (standardized infection ratio; 1.0 = national baseline).
- Surgical site infections (hysterectomy)
- Surgical site infections from abdominal hysterectomy (standardized infection ratio; 1.0 = national baseline).
- MRSA bloodstream infections
- Methicillin-resistant Staphylococcus aureus (MRSA) blood laboratory-identified events (standardized infection ratio; 1.0 = national baseline).
- C. diff infections
- Clostridium difficile (C. diff) intestinal infections (standardized infection ratio; 1.0 = national baseline).