994individuals
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
1,015individuals
LossArchived
670individuals
Hacking/IT IncidentArchived
10,313individuals
Hacking/IT IncidentArchived
3,350individuals
Unauthorized Access/DisclosureArchived
1,755individuals
Unauthorized Access/DisclosureArchived
1,412individuals
Improper DisposalArchived
5,207individuals
Hacking/IT IncidentArchived
13,942individuals
Unauthorized Access/DisclosureArchived
45,800individuals
Hacking/IT IncidentArchived
18,436individuals
Unauthorized Access/DisclosureArchived
15,046individuals
Unauthorized Access/DisclosureArchived
1,049individuals
Unauthorized Access/DisclosureArchived
1,424individuals
TheftArchived
3,751individuals
Unauthorized Access/DisclosureArchived
1,070individuals
Unauthorized Access/DisclosureArchived
1,843individuals
Unauthorized Access/DisclosureArchived
12,974individuals
Hacking/IT IncidentArchived
63,627individuals
Hacking/IT IncidentArchived
1,512individuals
Unauthorized Access/DisclosureArchived
NY · Feb 28, 2018
St. Peter's Ambulatory Surgery Center LLC - d/b/a St. Peter's Surgery & Endoscopy Center
Healthcare Provider
134,512individuals
Hacking/IT IncidentArchived
9,956individuals
Improper DisposalArchived
864individuals
Hacking/IT IncidentArchived
18,192individuals
Hacking/IT IncidentArchived
1,100individuals
Unauthorized Access/DisclosureArchived
5,600individuals
Unauthorized Access/DisclosureArchived
623individuals
TheftArchived
800individuals
Unauthorized Access/DisclosureArchived
735individuals
Unauthorized Access/DisclosureArchived
1,834individuals
Unauthorized Access/DisclosureArchived
1,000individuals
Unauthorized Access/DisclosureArchived
1,882individuals
Hacking/IT IncidentArchived
5,123individuals
Hacking/IT IncidentArchived
6,550individuals
Hacking/IT IncidentArchived
70,320individuals
Unauthorized Access/DisclosureArchived
11,248individuals
Unauthorized Access/DisclosureArchived
544individuals
LossArchived
2,450individuals
Hacking/IT IncidentArchived
660individuals
TheftArchived
6,781individuals
Hacking/IT IncidentArchived
36,305individuals
Unauthorized Access/DisclosureArchived
925individuals
Hacking/IT IncidentArchived
1,670individuals
Hacking/IT IncidentArchived
65,930individuals
Hacking/IT IncidentArchived
4,549individuals
Unauthorized Access/DisclosureArchived
24,000individuals
Hacking/IT IncidentArchived
3,202individuals
TheftArchived
1,123individuals
Improper DisposalArchived
3,677individuals
TheftArchived
634individuals
Unauthorized Access/DisclosureArchived
4,586individuals
Unauthorized Access/DisclosureArchived
1,500individuals
Hacking/IT IncidentArchived
MD · Jan 19, 2018
Westminster Ingleside King Farm Presbyterian Retirement Communities, Inc.
Healthcare Provider
5,228individuals
Hacking/IT IncidentArchived
4,476individuals
Unauthorized Access/DisclosureArchived
1,021individuals
Hacking/IT IncidentArchived
607individuals
Unauthorized Access/DisclosureArchived
53,173individuals
Hacking/IT IncidentArchived
917individuals
Unauthorized Access/DisclosureArchived
842individuals
Improper DisposalArchived
800individuals
Unauthorized Access/DisclosureArchived
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.