HHS OCR report ยท 2021
Trinity Health data breach
OCR report facts
- Covered entity
- Trinity Health
- Entity type
- Business Associate
- State
- Michigan
- Individuals affected
- 586,869
- Submission date
- Apr 5, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The business associate (BA), Trinity Health, reported that it was the victim of a hacking attack affecting the protected health information (PHI) of 586,869 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, claims and financial information, diagnoses, lab results, and medications. The BA notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the BA provided complimentary credit monitoring servic...
Text as published on the HHS OCR breach portal.
Other reports by Trinity Health
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Trinity Health | MI | Business Associate | 5,905 | May 13, 2026 | Unauthorized Access/Disclosure | Archive (closed) |
| Trinity Health | MI | Business Associate | 2,740 | Mar 13, 2026 | Unauthorized Access/Disclosure | Under investigation |
| Trinity Health | MI | Business Associate | 46,526 | Mar 6, 2023 | Hacking/IT Incident | Archive (closed) |
| Trinity Health | MI | Business Associate | 46,748 | Aug 29, 2022 | Unauthorized Access/Disclosure | Archive (closed) |
| Trinity Health | MI | Business Associate | 3,320,726 | Sep 14, 2020 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Trinity Health data breach?
The report to HHS OCR lists 586,869 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 5, 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: 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 Trinity Health 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 Trinity Health.