HHS OCR report ยท 2021
University of Wisconsin Hospitals and Clinics Authority data breach
OCR report facts
- Covered entity
- University of Wisconsin Hospitals and Clinics Authority
- Entity type
- Healthcare Provider
- State
- Wisconsin
- Individuals affected
- 4,563
- Submission date
- Jun 18, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Electronic Medical Record, Other
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), University of Wisconsin Hospitals and Clinics Authority, reported that it experienced a cyber-attack that affected the protected health information (PHI) of 4,563 individuals. The PHI included names, dates of birth, addresses, claims information, diagnoses/conditions, lab results, and medications. The CE notified HHS, the affected individuals, and the media. The CE implemented new policies and security awareness training as well as additional administrative, technic...
Text as published on the HHS OCR breach portal.
Other reports by University of Wisconsin Hospitals and Clinics Authority
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| University of Wisconsin Hospitals and Clinics Authority | WI | Healthcare Provider | 85,902 | Mar 5, 2024 | Hacking/IT Incident | Archive (closed) |
| University of Wisconsin Hospitals and Clinics Authority | WI | Healthcare Provider | 6,923 | Sep 30, 2016 | Unauthorized Access/Disclosure | Archive (closed) |
Frequently asked questions
How many people were affected by the University of Wisconsin Hospitals and Clinics Authority data breach?
The report to HHS OCR lists 4,563 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 18, 2021.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Electronic Medical Record, Other.
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 University of Wisconsin Hospitals and Clinics Authority 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 University of Wisconsin Hospitals and Clinics Authority.