9,387individuals
LossArchived
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
1,309individuals
Unauthorized Access/DisclosureArchived
1,203individuals
LossArchived
30,000individuals
Hacking/IT IncidentArchived
279,865individuals
Hacking/IT IncidentArchived
1,050individuals
TheftArchived
43,000individuals
TheftArchived
554individuals
Hacking/IT IncidentArchived
29,579individuals
Unauthorized Access/DisclosureArchived
639individuals
Hacking/IT IncidentArchived
16,238individuals
Hacking/IT IncidentArchived
614individuals
Unauthorized Access/DisclosureArchived
1,843individuals
Unauthorized Access/DisclosureArchived
638individuals
Unauthorized Access/DisclosureArchived
1,272individuals
LossArchived
1,380individuals
Unauthorized Access/DisclosureArchived
871individuals
Hacking/IT IncidentArchived
3,898individuals
Hacking/IT IncidentArchived
2,189individuals
Unauthorized Access/DisclosureArchived
1,900individuals
LossArchived
7,583individuals
Hacking/IT IncidentArchived
4,600individuals
TheftArchived
24,000individuals
Unauthorized Access/DisclosureArchived
2,158individuals
Improper DisposalArchived
1,128individuals
Hacking/IT IncidentArchived
4,389individuals
Hacking/IT IncidentArchived
500individuals
TheftArchived
TX · Dec 12, 2017
Midland County Hospital District d/b/a Midland Memorial Hospital
Healthcare Provider
1,160individuals
Hacking/IT IncidentArchived
1,205individuals
Hacking/IT IncidentArchived
1,279individuals
Unauthorized Access/DisclosureArchived
IL · Dec 9, 2017
Franciscan Physician Network of Illinois and Specialty Physicians of Illinois, LLC (formerly known as WellGroup Health Partners, LLC)
Healthcare Provider
23,000individuals
LossArchived
IA · Dec 8, 2017
Central Iowa Hospital Corporation d/b/a Blank Children's Hospital
Healthcare Provider
557individuals
Unauthorized Access/DisclosureArchived
836individuals
Unauthorized Access/DisclosureArchived
27,113individuals
TheftArchived
7,221individuals
Hacking/IT IncidentArchived
2,620individuals
Hacking/IT IncidentArchived
1,750individuals
Hacking/IT IncidentArchived
8,256individuals
Hacking/IT IncidentArchived
650individuals
Unauthorized Access/DisclosureArchived
47,000individuals
Hacking/IT IncidentArchived
9,305individuals
Unauthorized Access/DisclosureArchived
3,280individuals
Hacking/IT IncidentArchived
43,563individuals
Hacking/IT IncidentArchived
11,347individuals
Hacking/IT IncidentArchived
4,145individuals
TheftArchived
2,146individuals
Unauthorized Access/DisclosureArchived
16,474individuals
Hacking/IT IncidentArchived
32,000individuals
Hacking/IT IncidentArchived
652individuals
LossArchived
CA · Nov 22, 2017
Sutter Valley Medical Foundation d/b/a Sutter Medical Foundation
Healthcare Provider
1,303individuals
TheftArchived
880individuals
Hacking/IT IncidentArchived
5,764individuals
Unauthorized Access/DisclosureArchived
500individuals
TheftArchived
TX · Nov 17, 2017
Dallas County Mental Health Mental Retardation Center dba Metrocare Services
Healthcare Provider
120,259individuals
Hacking/IT IncidentArchived
9,500individuals
Hacking/IT IncidentArchived
909individuals
TheftArchived
515individuals
Unauthorized Access/DisclosureArchived
1,208individuals
Hacking/IT IncidentArchived
8,800individuals
Hacking/IT IncidentArchived
1,850individuals
Improper DisposalArchived
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.