HHS OCR report · 2023
The Chattanooga Heart Institute data breach
OCR report facts
- Covered entity
- The Chattanooga Heart Institute
- Entity type
- Healthcare Provider
- State
- Tennessee
- Individuals affected
- 545,491
- Submission date
- Jul 28, 2023
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
The covered entity (CE), Chattanooga Heart Institute, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 595,491 individuals. The affected information included names, addresses, dates of birth, drivers’ license and Social Security numbers, claims and financial information, diagnoses, lab results, medications, and other treatment information. The CE provided breach notification to the affected individuals, the media, the HHS Secretary, and ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the The Chattanooga Heart Institute data breach?
The report to HHS OCR lists 545,491 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jul 28, 2023.
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 The Chattanooga Heart Institute 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 The Chattanooga Heart Institute.