HHS OCR report ยท 2026
Commonwealth Care Alliance data breach
OCR report facts
- Covered entity
- Commonwealth Care Alliance
- Entity type
- Health Plan
- State
- Massachusetts
- Individuals affected
- 634
- Submission date
- Feb 25, 2026
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Paper/Films
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Commonwealth Care Alliance, reported that an employee mailed the protected health information (PHI) of 634 individuals to the wrong recipients. The PHI involved clinical information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE provided complimentary credit monitoring services to the affected individuals, and implemented additional administrative, technical, and security safeguards to better protect its PHI.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Commonwealth Care Alliance data breach?
The report to HHS OCR lists 634 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Feb 25, 2026.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, with the breached information located in: Paper/Films.
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 Commonwealth Care Alliance 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 Commonwealth Care Alliance.