HHS OCR report ยท 2025
Integrated Oncology Network data breach
OCR report facts
- Covered entity
- Integrated Oncology Network
- Entity type
- Business Associate
- State
- Tennessee
- Individuals affected
- 4,174
- Submission date
- Jun 27, 2025
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The Business Associate (BA), Integrated Oncology Network, reported that employees were the targets of an email phishing scheme that affected the PHI of 4,174 individuals. The PHI involved demographic, clinical, and treatment information. The BA notified the Covered Entities, HHS, the affected individuals, the media and posted substitute notice. In response to the breach, the BA ensured that no unauthorized mailbox rules, forwarding settings, or persistence mechanisms existed in the email ten...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Integrated Oncology Network data breach?
The report to HHS OCR lists 4,174 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jun 27, 2025.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Email.
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 Integrated Oncology Network 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 Integrated Oncology Network.