Commonwealth Care Alliance
Disclosed Feb 25, 20267 months ago634 affectedConfirmed
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.
What is known
| People affected | 634 (as reported to HHS) |
|---|---|
| Disclosed | Feb 25, 2026 |
| Attack | Insider |
| Data exposed | Names, Health |
| Sector | Insurance · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| HHS OCR breach report (archive, resolved): Commonwealth Care Alliance (Health Plan, MA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| HHS archivetotal | Feb 25 | 634 |
History of this record
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.