HHS OCR report ยท 2024
Citadel of Northbrook data breach
OCR report facts
- Covered entity
- Citadel of Northbrook
- Entity type
- Healthcare Provider
- State
- Illinois
- Individuals affected
- 2,155
- Submission date
- Nov 25, 2024
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Electronic Medical Record, Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Citadel of Northbrook, reported that its business associate (BA) experienced a data security incident that affected the protected health information (PHI) of 2,155 individuals. The PHI involved included clinical and demographic information. The CE notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services to the affected individuals, and the CE and BA implemente...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Citadel of Northbrook data breach?
The report to HHS OCR lists 2,155 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Nov 25, 2024.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Electronic Medical Record, 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 Citadel of Northbrook 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 Citadel of Northbrook.