HHS OCR report ยท 2023
Clarke County Hospital data breach
OCR report facts
- Covered entity
- Clarke County Hospital
- Entity type
- Healthcare Provider
- State
- Iowa
- Individuals affected
- 28,003
- Submission date
- May 17, 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), Clarke County Hospital, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 28,003 individuals. The PHI involved included names, dates of birth, addresses, and diagnoses. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, an...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Clarke County Hospital data breach?
The report to HHS OCR lists 28,003 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 17, 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 Clarke County Hospital 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 Clarke County Hospital.