Marshfield Clinic Health System data breach
Marshfield Clinic Health System reported a data breach to the U.S. HHS Office for Civil Rights in 2025, affecting 35,952 individuals.
| Organization | Marshfield Clinic Health System |
| Reporting authority | HHS OCR Breach Portal |
| State | WI |
| Entity type | Healthcare Provider |
| Individuals affected | 35,952 |
| Date reported | 2025-11-07 |
| Type of breach | Hacking/IT Incident |
| Location of breached info | |
| Business associate involved | No |
| Status | Under Investigation |
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