HHS OCR report · 2019
Mercy Health Saint Mary's data breach
OCR report facts
- Covered entity
- Mercy Health Saint Mary's
- Entity type
- Healthcare Provider
- State
- Michigan
- Individuals affected
- 976
- Submission date
- May 24, 2019
- 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), Mercy Health Saint Mary’s, reported that it experienced a malware attack that affected the electronic protected health information (ePHI) of 976 individuals. The ePHI involved included names, addresses, dates of birth, and Social Security numbers. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. The CE provided complimentary credit monitoring and identity protection services. In response to the breach, the CE stren...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Mercy Health Saint Mary's data breach?
The report to HHS OCR lists 976 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 24, 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: 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 Mercy Health Saint Mary's 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 Saint Mary's.