HHS OCR report ยท 2019
Mercy Health System Corporation data breach
OCR report facts
- Covered entity
- Mercy Health System Corporation
- Entity type
- Healthcare Provider
- State
- Wisconsin
- Individuals affected
- 5,946
- Submission date
- Jul 2, 2019
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
Mercy Health System Corporation (MHSC), the covered entity (CE), reported that an employee of its business associate (BA) was the victim of an email phishing scheme that affected 5,946 individuals. The protected health information (PHI) involved included names, addresses, Social Security numbers, and treatment information. The CE, in conjunction with the BA, notified HHS, affected individuals, the media, and offered complimentary identity theft monitoring services. MHSC also provided subst...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Mercy Health System Corporation data breach?
The report to HHS OCR lists 5,946 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jul 2, 2019.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
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 Mercy Health System Corporation 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 Mercy Health System Corporation.