HHS OCR report ยท 2021
Maestro Health, LLC data breach
OCR report facts
- Covered entity
- Maestro Health, LLC
- Entity type
- Business Associate
- State
- Illinois
- Individuals affected
- 18,488
- Submission date
- Apr 6, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The business associate (BA), Maestro Health, reported that several employees were the victims of an email phishing attack affecting the protected health information (PHI) of 18,488 individuals. The PHI involved included names, dates of birth, addresses, and Social Security numbers. The BA notified HHS, affected individuals, and the media. In response to the breach, the BA implemented additional administrative, technical, and security safeguards, revised its policies and procedures, retrained ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Maestro Health, LLC data breach?
The report to HHS OCR lists 18,488 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 6, 2021.
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 Maestro Health, LLC 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 Maestro Health, LLC.