HHS OCR report · 2021
Osborn Cancer Care data breach
OCR report facts
- Covered entity
- Osborn Cancer Care
- Entity type
- Healthcare Provider
- State
- Washington
- Individuals affected
- 4,614
- Submission date
- Jul 8, 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), Osborn Cancer Care, reported that its business associate (BA) was the subject of a ransomware attack affecting the protected health information (PHI) of 4,614 individuals. The PHI involved included names, dates of birth, drivers’ license information, addresses, diagnoses, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE provided complimentary credit monitor...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Osborn Cancer Care data breach?
The report to HHS OCR lists 4,614 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jul 8, 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 Osborn Cancer 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 Osborn Cancer Care.