11,709individuals
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
360,220individuals
Hacking/IT IncidentArchived
46,677individuals
Unauthorized Access/DisclosureArchived
1,270individuals
Hacking/IT IncidentArchived
2,988individuals
Hacking/IT IncidentArchived
2,931individuals
Unauthorized Access/DisclosureArchived
65,295individuals
Hacking/IT IncidentArchived
2,385,646individuals
Hacking/IT IncidentArchived
772individuals
Unauthorized Access/DisclosureArchived
5,326individuals
Hacking/IT IncidentArchived
56,405individuals
Hacking/IT IncidentArchived
36,900individuals
Hacking/IT IncidentArchived
553individuals
Hacking/IT IncidentArchived
MI · Jan 24, 2024
Marian Village Corporation, d/b/a/ Marywood Nursing Care Center (“Marywood”)
Healthcare Provider
6,178individuals
Hacking/IT IncidentArchived
55,055individuals
Hacking/IT IncidentArchived
1,695individuals
Hacking/IT IncidentArchived
38,361individuals
Hacking/IT IncidentArchived
1,170individuals
Hacking/IT IncidentArchived
29,100individuals
Hacking/IT IncidentArchived
307,864individuals
Hacking/IT IncidentArchived
12,539individuals
Unauthorized Access/DisclosureArchived
2,570individuals
Hacking/IT IncidentArchived
3,567individuals
Hacking/IT IncidentArchived
132,887individuals
Hacking/IT IncidentArchived
1,074individuals
Unauthorized Access/DisclosureArchived
4,231individuals
Hacking/IT IncidentArchived
856individuals
Unauthorized Access/DisclosureArchived
846individuals
Hacking/IT IncidentArchived
13,655individuals
Hacking/IT IncidentArchived
1,063individuals
Unauthorized Access/DisclosureArchived
11,556individuals
Hacking/IT IncidentArchived
151,499individuals
Hacking/IT IncidentArchived
348,000individuals
Hacking/IT IncidentArchived
6,020individuals
Hacking/IT IncidentArchived
170,052individuals
Hacking/IT IncidentArchived
34,063individuals
TheftArchived
501individuals
Hacking/IT IncidentArchived
6,194individuals
Hacking/IT IncidentArchived
9,967individuals
Hacking/IT IncidentArchived
4,135individuals
Hacking/IT IncidentArchived
6,457individuals
Hacking/IT IncidentArchived
44,312individuals
Hacking/IT IncidentArchived
19,893individuals
Hacking/IT IncidentArchived
45,357individuals
Hacking/IT IncidentArchived
3,998,163individuals
Hacking/IT IncidentArchived
12,143individuals
Hacking/IT IncidentArchived
797individuals
Hacking/IT IncidentArchived
2,652individuals
Hacking/IT IncidentArchived
75,349individuals
Hacking/IT IncidentArchived
8,200individuals
Unauthorized Access/DisclosureArchived
9,255individuals
Hacking/IT IncidentArchived
124,341individuals
Hacking/IT IncidentArchived
5,280individuals
Hacking/IT IncidentArchived
11,535individuals
Hacking/IT IncidentArchived
1,107individuals
LossArchived
545,001individuals
Hacking/IT IncidentArchived
2,380individuals
Unauthorized Access/DisclosureArchived
60,871individuals
Hacking/IT IncidentArchived
2,442individuals
Hacking/IT IncidentArchived
1,023individuals
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.