HHS OCR report ยท 2020
Mille Lacs Health System data breach
OCR report facts
- Covered entity
- Mille Lacs Health System
- Entity type
- Healthcare Provider
- State
- Minnesota
- Individuals affected
- 10,630
- Submission date
- May 11, 2020
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- No
- Status
- Archive (closed)
OCR description
Mille Lacs Health System (MLHS), the covered entity (CE), reported that several employees were the victims of an email phishing scheme that affected the protected health information (PHI) of 10,630 individuals. The PHI involved included names, addresses, Social Security numbers, and clinical information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. The CE provided complimentary credit monitoring and identity theft restoration services t...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Mille Lacs Health System data breach?
The report to HHS OCR lists 10,630 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 11, 2020.
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 Mille Lacs Health System 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 Mille Lacs Health System.