HHS OCR report ยท 2020
Cornerstones of Care data breach
OCR report facts
- Covered entity
- Cornerstones of Care
- Entity type
- Healthcare Provider
- State
- Missouri
- Individuals affected
- 15,680
- Submission date
- Nov 12, 2020
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Other
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Cornerstones of Care, reported that its business associate (BA) experienced a ransomware attack affecting the electronic protected health information (ePHI) of approximately 15,680 individuals. The ePHI involved included names, addresses, dates of birth, Social Security numbers, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.
Text as published on the HHS OCR breach portal.
Other reports by Cornerstones of Care
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Cornerstones of Care | MO | Healthcare Provider | 2,771 | Feb 14, 2025 | Hacking/IT Incident | Under investigation |
Frequently asked questions
How many people were affected by the Cornerstones of Care data breach?
The report to HHS OCR lists 15,680 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 12, 2020.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: 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 Cornerstones of Care 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 Cornerstones of Care.