HHS OCR report ยท 2016
Northwest Oncology & Hematology, S.C. data breach
OCR report facts
- Covered entity
- Northwest Oncology & Hematology, S.C.
- Entity type
- Healthcare Provider
- State
- Illinois
- Individuals affected
- 1,625
- Submission date
- May 11, 2016
- Type of breach
- Unauthorized Access/Disclosure
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Northwest Oncology & Hematology, S.C., reported that an employee sent emails to patients without using the blind-copy function. As a result, the email addresses of 1,625 individuals was exposed. The CE notified HHS, affected individuals, and the media. The employee responsible was sanctioned.
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Northwest Oncology & Hematology, S.C. data breach?
The report to HHS OCR lists 1,625 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 11, 2016.
What type of breach was it?
The OCR portal lists the type of breach as Unauthorized Access/Disclosure, 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 Northwest Oncology & Hematology, S.C. 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 Northwest Oncology & Hematology, S.C..