HHS OCR report ยท 2023
Chippewa County data breach
OCR report facts
- Covered entity
- Chippewa County
- Entity type
- Healthcare Provider
- State
- Wisconsin
- Individuals affected
- 842
- Submission date
- Apr 4, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Chippewa County, experienced a cybersecurity incident that affected the protected health information (PHI) of 842 individuals. The PHI involved included diagnoses and medications. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE sanctioned the responsible individual and retrained its staff.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Chippewa County data breach?
The report to HHS OCR lists 842 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 4, 2023.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Chippewa County legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Chippewa County.