160,268individuals
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
81,118individuals
Hacking/IT IncidentArchived
43,667individuals
Hacking/IT IncidentArchived
27,244individuals
Hacking/IT IncidentArchived
54,869individuals
Hacking/IT IncidentArchived
111,588individuals
Hacking/IT IncidentArchived
54,151individuals
Hacking/IT IncidentArchived
727individuals
Hacking/IT IncidentArchived
58,123individuals
Hacking/IT IncidentArchived
33,575individuals
Hacking/IT IncidentArchived
343,493individuals
Hacking/IT IncidentArchived
3,845individuals
Hacking/IT IncidentArchived
93,642individuals
Hacking/IT IncidentArchived
17,000individuals
Unauthorized Access/DisclosureArchived
4,586individuals
Hacking/IT IncidentArchived
1,620individuals
Hacking/IT IncidentArchived
1,045,270individuals
Hacking/IT IncidentArchived
CO · Sep 9, 2020
Mental Health Center of Boulder County Inc. dba Mental Health Partners
Healthcare Provider
2,650individuals
Hacking/IT IncidentArchived
3,905individuals
Hacking/IT IncidentArchived
92,963individuals
Hacking/IT IncidentArchived
92,064individuals
Hacking/IT IncidentArchived
163,774individuals
Hacking/IT IncidentArchived
244,761individuals
Hacking/IT IncidentArchived
2,979individuals
Unauthorized Access/DisclosureArchived
1,076individuals
Improper DisposalArchived
4,938individuals
LossArchived
348,746individuals
Hacking/IT IncidentArchived
52,795individuals
Hacking/IT IncidentArchived
60,200individuals
Hacking/IT IncidentArchived
7,777individuals
Hacking/IT IncidentArchived
6,000individuals
Hacking/IT IncidentArchived
4,056individuals
TheftArchived
308,169individuals
Hacking/IT IncidentArchived
165,000individuals
Hacking/IT IncidentArchived
52,711individuals
Hacking/IT IncidentArchived
6,000individuals
Hacking/IT IncidentArchived
2,869individuals
TheftArchived
55,983individuals
Hacking/IT IncidentArchived
148,594individuals
Hacking/IT IncidentArchived
244,813individuals
Hacking/IT IncidentArchived
60,595individuals
Hacking/IT IncidentArchived
9,149individuals
Hacking/IT IncidentArchived
740individuals
TheftArchived
1,538individuals
Hacking/IT IncidentArchived
3,027individuals
Hacking/IT IncidentArchived
1,021individuals
Hacking/IT IncidentArchived
179,189individuals
Hacking/IT IncidentArchived
16,579individuals
Hacking/IT IncidentArchived
971individuals
Hacking/IT IncidentArchived
360,212individuals
Hacking/IT IncidentArchived
648individuals
Unauthorized Access/DisclosureArchived
564individuals
Hacking/IT IncidentArchived
1,164individuals
Hacking/IT IncidentArchived
10,393individuals
Hacking/IT IncidentArchived
2,827individuals
LossArchived
139,114individuals
Hacking/IT IncidentArchived
22,718individuals
Hacking/IT IncidentArchived
1,907individuals
Unauthorized Access/DisclosureArchived
2,102individuals
Hacking/IT IncidentArchived
177,023individuals
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.