Hospitals in Rock County, Wisconsin
4 Medicare-certified hospitals, sorted by CMS overall rating (a national standard — not curved within Wisconsin). “Not rated” is CMS’s own suppression, never a judgment.
| Hospital | City | CMS rating | ER |
|---|---|---|---|
| SSM Health St Mary's Hospital - Janesville | Janesville | ★★★★★4 | Yes |
| Beloit Health System | Beloit | ★★★★★3 | Yes |
| Mercy Health System Corp | Janesville | ★★★★★3 | Yes |
| Edgerton Hospital and Health Services | Edgerton | not rated | Yes |
Data: Centers for Medicare & Medicaid Services (data.cms.gov), last updated April 28, 2026. This site is not affiliated with CMS or any government agency.