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Regulator-posted notice

Breach notice filed by The Chattanooga Heart Institute (July 2023)

Organization named: The Chattanooga Heart Institute Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of July 28, 2023.

Organization as reported
The Chattanooga Heart Institute, TN
Entity type as reported
Healthcare Provider
Category as reported
Hacking/IT Incident
Location of information as reported
Network Server
Submission date
July 28, 2023
Observed by BreachRecords
2026-10-18 16:15 UTC (revision 10566, row:1705)
Archived copy
Held in the private archive (provenance)

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 posted substitute breach notice on its website. In response to the breach, the CE reset all passwords and implemented a series of improved technical safeguards.

The source's own words, from the revision above.

Figures, per source

  • 545,491 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date July 28, 2023, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Submission date (HHS Office for Civil Rights breach portal)
  • Observed by BreachRecords (revision 10566)
  • Approved by a reviewer

Organizations linked by a reviewer

  • The Chattanooga Heart Institute Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

  • 3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
    text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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