25,093individuals
Hacking/IT IncidentArchived
The Signal Directory
Health Data Breach Tracker
Search every US health data breach of 500 or more people reported to HHS OCR since 2009. Filter by entity, type and date. Built from the OCR public breach portal.
Breaches listed
8,066
2009 to 2026
Individuals affected
1,106,146,271
sum of reported counts
Under investigation
open OCR cases
Top breach types
- 4,864
- 1,694
- 1,003
- 216
Monthly roundups
8,066 breaches
783individuals
Hacking/IT IncidentArchived
411,037individuals
Hacking/IT IncidentArchived
10,704individuals
Hacking/IT IncidentArchived
1,123individuals
Hacking/IT IncidentArchived
5,500individuals
Hacking/IT IncidentArchived
38,442individuals
Hacking/IT IncidentArchived
52,372individuals
Hacking/IT IncidentArchived
4,300,000individuals
Hacking/IT IncidentArchived
41,662individuals
Hacking/IT IncidentArchived
185,606individuals
Hacking/IT IncidentArchived
33,279individuals
Unauthorized Access/DisclosureArchived
10,200individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentArchived
1,894individuals
Hacking/IT IncidentArchived
53,737individuals
Hacking/IT IncidentArchived
3,472individuals
Hacking/IT IncidentArchived
RI · Aug 7, 2024
Internal Medicine Associates, LLC d/b/a Gastrointestinal Medicine Associates
Healthcare Provider
31,835individuals
Hacking/IT IncidentArchived
31,216individuals
Hacking/IT IncidentArchived
280,534individuals
Hacking/IT IncidentArchived
6,890individuals
Hacking/IT IncidentArchived
64,131individuals
Hacking/IT IncidentArchived
1,114individuals
Hacking/IT IncidentArchived
3,359individuals
Hacking/IT IncidentArchived
2,500individuals
Hacking/IT IncidentArchived
1,448individuals
Hacking/IT IncidentArchived
1,166individuals
Unauthorized Access/DisclosureArchived
500individuals
Hacking/IT IncidentArchived
171,871individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
1,914individuals
Hacking/IT IncidentArchived
148,363individuals
Hacking/IT IncidentArchived
526individuals
Unauthorized Access/DisclosureArchived
1,115individuals
Hacking/IT IncidentArchived
107,894individuals
Hacking/IT IncidentArchived
1,655individuals
Unauthorized Access/DisclosureArchived
300,000individuals
Hacking/IT IncidentArchived
48,684individuals
Hacking/IT IncidentArchived
16,378individuals
Hacking/IT IncidentArchived
4,109individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentArchived
375,436individuals
Hacking/IT IncidentArchived
4,648individuals
Hacking/IT IncidentArchived
192,700,000individuals
Hacking/IT IncidentArchived
44,991individuals
Hacking/IT IncidentUnder investigation
10,263individuals
Hacking/IT IncidentArchived
NH · Jul 19, 2024
Neuro Rehab Associates, Inc. d/b/a Northeast Rehabilitation Hospital Network
Healthcare Provider
136,724individuals
Hacking/IT IncidentArchived
4,500individuals
Hacking/IT IncidentArchived
56,953individuals
Hacking/IT IncidentArchived
6,926individuals
Hacking/IT IncidentArchived
CA · Jul 15, 2024
Kaiser Foundation Hospitals, Northern California and The Permanente Medical Group, Inc.
Healthcare Provider
3,435individuals
Unauthorized Access/DisclosureArchived
8,190individuals
Hacking/IT IncidentArchived
42,000individuals
Hacking/IT IncidentArchived
10,482individuals
Unauthorized Access/DisclosureArchived
3,512individuals
Hacking/IT IncidentArchived
74,413individuals
Hacking/IT IncidentArchived
4,373individuals
Hacking/IT IncidentArchived
26,372individuals
Unauthorized Access/DisclosureArchived
4,600individuals
Hacking/IT IncidentArchived
2,656individuals
Hacking/IT IncidentArchived
About this data
By Dr. Dereck Mush, MD, MBA, Editor In Chief
It currently holds 8,066 breaches, with submission dates from October 21, 2009 to October 9, 2026, and it refreshes every week from OCR's public breach portal.
We built it for the people who have to act on this data: health system CISOs and security teams benchmarking their own risk, compliance and privacy leads tracking how breaches are reported, and investors doing diligence on healthcare companies and their vendors.
Here's how to read it. Each row is a single report filed with OCR. It shows the covered entity, its state and entity type, the number of individuals affected, the breach type (for example hacking or IT incident, or unauthorized access), where the information was held, and the date it was submitted. Use the filters to narrow by submission date, entity type or breach type, and open any row for its detail page. The monthly roundups group new reports by submission month, so you can see what changed recently without scrolling the full list.
- Source. Every record comes from the HHS OCR breach portal, which lists breaches of unsecured protected health information affecting 500 or more individuals. We show the data as OCR reports it and don't add or change the reported facts. Any editorial note we add is labeled as ours.
- Under investigation vs archive. OCR keeps two lists. "Under investigation" lists HIPAA breaches reported within the last 24 months that are currently under investigation by the Office for Civil Rights. "Archive" holds resolved HIPAA breach reports and/or reports older than 24 months. A breach can move from one list to the other between weekly refreshes.
- Individuals affected. These are the counts reported to OCR. Entities can revise them, and the same person can appear in more than one breach, especially when a single vendor incident is reported separately by several covered entities. Adding the counts together will overstate the number of unique people affected.
- No implication of wrongdoing. A listing means a breach was reported to OCR. It doesn't mean the entity broke the law or was at fault beyond what OCR itself has published. Check OCR's own records for any finding, resolution or penalty.
- Updates. The tracker refreshes weekly. If you spot something that doesn't match OCR's portal, tell us and we'll check it against the source.
Source: HHS Office for Civil Rights Breach Portal. Latest submission in the data: Oct 9, 2026. Refreshed weekly from the portal.