778individuals
Unauthorized Access/DisclosureArchived
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
58,251individuals
Hacking/IT IncidentArchived
2,127individuals
Hacking/IT IncidentArchived
180,000individuals
Hacking/IT IncidentArchived
755individuals
Unauthorized Access/DisclosureArchived
7,162individuals
Hacking/IT IncidentArchived
24,754individuals
Hacking/IT IncidentArchived
22,315individuals
Hacking/IT IncidentArchived
State not listed · Sep 16, 2024
La Liga Puertorriquena Contra El Cancer DBA Hospital Oncológico
Healthcare Provider
4,590individuals
Hacking/IT IncidentArchived
4,189individuals
Hacking/IT IncidentArchived
720individuals
Hacking/IT IncidentArchived
32,120individuals
Hacking/IT IncidentArchived
85,531individuals
Hacking/IT IncidentArchived
500individuals
Hacking/IT IncidentArchived
5,205individuals
Hacking/IT IncidentArchived
961,003individuals
Hacking/IT IncidentArchived
2,059individuals
Hacking/IT IncidentArchived
813individuals
Hacking/IT IncidentArchived
501individuals
Hacking/IT IncidentArchived
76,365individuals
Hacking/IT IncidentArchived
2,618individuals
TheftArchived
3,112,815individuals
Hacking/IT IncidentArchived
56,635individuals
Hacking/IT IncidentArchived
16,879individuals
Hacking/IT IncidentArchived
597individuals
Hacking/IT IncidentArchived
2,334individuals
Hacking/IT IncidentArchived
42,432individuals
Hacking/IT IncidentArchived
OH · Sep 3, 2024
Premier Health Family Care – North and Premier Health Family Care of Vandalia
Healthcare Provider
3,092individuals
Unauthorized Access/DisclosureArchived
8,039individuals
Hacking/IT IncidentArchived
1,450individuals
Hacking/IT IncidentArchived
5,207individuals
Hacking/IT IncidentArchived
7,486individuals
Hacking/IT IncidentArchived
249,297individuals
Hacking/IT IncidentArchived
665,321individuals
Hacking/IT IncidentArchived
4,329individuals
Hacking/IT IncidentArchived
1,221individuals
Hacking/IT IncidentArchived
1,017individuals
Hacking/IT IncidentArchived
7,170individuals
Hacking/IT IncidentArchived
9,602individuals
Hacking/IT IncidentArchived
6,228individuals
Hacking/IT IncidentArchived
972individuals
Hacking/IT IncidentArchived
9,592individuals
Hacking/IT IncidentUnder investigation
1,381individuals
Hacking/IT IncidentArchived
4,125individuals
Unauthorized Access/DisclosureArchived
729,699individuals
Hacking/IT IncidentArchived
26,429individuals
Hacking/IT IncidentArchived
286,935individuals
Hacking/IT IncidentArchived
CA · Aug 21, 2024
Pomona Community Health Center dba ParkTree Community Health Center
Healthcare Provider
40,964individuals
Hacking/IT IncidentArchived
2,896,985individuals
Hacking/IT IncidentArchived
12,495individuals
Unauthorized Access/DisclosureArchived
112,726individuals
Hacking/IT IncidentArchived
2,815individuals
Hacking/IT IncidentArchived
46,354individuals
Hacking/IT IncidentArchived
4,435individuals
Hacking/IT IncidentArchived
26,744individuals
Hacking/IT IncidentArchived
971individuals
Hacking/IT IncidentArchived
642individuals
Hacking/IT IncidentArchived
134,918individuals
Hacking/IT IncidentArchived
30,819individuals
Hacking/IT IncidentArchived
64,609individuals
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.