HHS OCR report ยท 2023
Evergreen Treatment Services data breach
OCR report facts
- Covered entity
- Evergreen Treatment Services
- Entity type
- Healthcare Provider
- State
- Washington
- Individuals affected
- 21,325
- Submission date
- Feb 10, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
Evergreen Treatment Services, the covered entity (CE), reported that its computer system was breached by ransomware that compromised the protected health information (PHI) of 21,325 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, diagnoses, medications, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In its mitigation efforts, the CE provided complimentary credit monitorin...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Evergreen Treatment Services data breach?
The report to HHS OCR lists 21,325 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Feb 10, 2023.
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 Evergreen Treatment Services 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 Evergreen Treatment Services.