HHS OCR report ยท 2022
Comstar, LLC data breach
OCR report facts
- Covered entity
- Comstar, LLC
- Entity type
- Business Associate
- State
- Massachusetts
- Individuals affected
- 585,621
- Submission date
- May 26, 2022
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- Yes
- Status
- Archive (closed)
OCR description
The covered entity (CE), Comstar, LLC, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 585,621 individuals. The PHI involved clinical, demographic, and financial 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, implemented additional administrative, technical, and securi...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Comstar, LLC data breach?
The report to HHS OCR lists 585,621 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on May 26, 2022.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: 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 Comstar, 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 Comstar, LLC.