HHS OCR report · 2017
Network Health data breach
OCR report facts
- Covered entity
- Network Health
- Entity type
- Health Plan
- State
- Wisconsin
- Individuals affected
- 51,232
- Submission date
- Sep 8, 2017
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
Network Health, the covered entity (CE), reported that its employees were the victims of an email phishing attack. The affected accounts contained the protected health information (PHI) of 51,323 individuals. The PHI involved included names, addresses, phone numbers, dates of birth, claims data, provider information, and Medicare numbers. The CE notified HHS, affected individuals, and the media. The CE also notified the Federal Bureau of Investigation. As a result of this breach and OCR’s ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Network Health data breach?
The report to HHS OCR lists 51,232 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Sep 8, 2017.
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 Network Health 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 Network Health.