HHS OCR report ยท 2021
Trillium Community Health Plan data breach
OCR report facts
- Covered entity
- Trillium Community Health Plan
- Entity type
- Health Plan
- State
- Oregon
- Individuals affected
- 87,761
- Submission date
- Mar 3, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Trillium Community Health Plan, reported that its business associate (BA) experienced a cyber-attack that affected the electronic protected health information (ePHI) of 87,761 individuals. The ePHI involved included names, addresses, dates of birth, health insurance information, diagnoses, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. Following the breach, the CE prov...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Trillium Community Health Plan data breach?
The report to HHS OCR lists 87,761 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Mar 3, 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 Trillium Community Health Plan 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 Trillium Community Health Plan.