536individuals
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
3,751individuals
Hacking/IT IncidentArchived
25,000individuals
Hacking/IT IncidentArchived
141,149individuals
Hacking/IT IncidentArchived
138,000individuals
Hacking/IT IncidentArchived
HI · Apr 20, 2021
Specialty Surgical Suites dba Minimally Invasive Surgery of Hawaii
Healthcare Provider
1,000individuals
Hacking/IT IncidentArchived
3,616individuals
Hacking/IT IncidentArchived
823individuals
Unauthorized Access/DisclosureArchived
615individuals
Hacking/IT IncidentArchived
537individuals
Unauthorized Access/DisclosureArchived
23,282individuals
Hacking/IT IncidentArchived
31,195individuals
Hacking/IT IncidentArchived
24,037individuals
Hacking/IT IncidentArchived
1,905individuals
Hacking/IT IncidentArchived
6,638individuals
Unauthorized Access/DisclosureArchived
2,704individuals
Unauthorized Access/DisclosureArchived
3,336individuals
Hacking/IT IncidentArchived
FL · Apr 15, 2021
Unlimited Medical Services of Florida, LLC DBA DNF Medical Centers
Healthcare Provider
846individuals
Unauthorized Access/DisclosureArchived
45,200individuals
Hacking/IT IncidentArchived
943individuals
Unauthorized Access/DisclosureArchived
17,580individuals
Hacking/IT IncidentArchived
803individuals
Hacking/IT IncidentArchived
37,331individuals
Hacking/IT IncidentArchived
901individuals
Hacking/IT IncidentArchived
337,245individuals
Hacking/IT IncidentArchived
153,013individuals
Hacking/IT IncidentArchived
499,779individuals
Hacking/IT IncidentArchived
747individuals
Hacking/IT IncidentArchived
4,393individuals
Unauthorized Access/DisclosureArchived
2,704individuals
Unauthorized Access/DisclosureArchived
3,835individuals
Hacking/IT IncidentArchived
18,488individuals
Hacking/IT IncidentArchived
1,298individuals
Unauthorized Access/DisclosureArchived
3,306individuals
Hacking/IT IncidentArchived
4,852individuals
Hacking/IT IncidentArchived
66,330individuals
Hacking/IT IncidentArchived
4,983individuals
Hacking/IT IncidentArchived
221,454individuals
Hacking/IT IncidentArchived
586,869individuals
Hacking/IT IncidentArchived
9,840individuals
Hacking/IT IncidentArchived
420,532individuals
Hacking/IT IncidentArchived
9,202individuals
Hacking/IT IncidentArchived
23,869individuals
Hacking/IT IncidentArchived
784individuals
Hacking/IT IncidentArchived
135,908individuals
Unauthorized Access/DisclosureArchived
17,562individuals
Hacking/IT IncidentArchived
1,893individuals
Unauthorized Access/DisclosureArchived
18,913individuals
Unauthorized Access/DisclosureArchived
MD · Mar 31, 2021
Three Lower Counties Community Services, Inc. d/b/a Chesapeake Health Care
Healthcare Provider
2,505individuals
Unauthorized Access/DisclosureArchived
1,833individuals
Unauthorized Access/DisclosureArchived
1,832individuals
Hacking/IT IncidentArchived
31,132individuals
Hacking/IT IncidentArchived
1,364individuals
Hacking/IT IncidentArchived
728individuals
Unauthorized Access/DisclosureArchived
157,939individuals
Hacking/IT IncidentArchived
38,575individuals
Hacking/IT IncidentArchived
35,485individuals
Hacking/IT IncidentArchived
753,107individuals
Hacking/IT IncidentArchived
200,665individuals
Hacking/IT IncidentArchived
80,242individuals
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.