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

NY · Aug 18, 2025

CareTracker, Inc.

Business Associate

501individuals

Hacking/IT IncidentUnder investigation

PA · Aug 15, 2025

Alert Medical Alarms

Healthcare Provider

39,218individuals

Hacking/IT IncidentUnder investigation

CT · Aug 12, 2025

UnitedHealthcare

Health Plan

3,215individuals

Unauthorized Access/DisclosureArchived

MA · Aug 12, 2025

Zelis Healthcare LLC

Business Associate

4,289individuals

Unauthorized Access/DisclosureArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

2,700individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

1,520individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

2,366individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

6,414individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

882individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

1,011individuals

Hacking/IT IncidentArchived

CA · Aug 11, 2025

Altos Inc

Business Associate

1,634individuals

Hacking/IT IncidentArchived

CA · Aug 8, 2025

Friesen Group

Healthcare Provider

500individuals

Hacking/IT IncidentArchived

WA · Aug 8, 2025

PROVAIL

Healthcare Provider

4,908individuals

Hacking/IT IncidentArchived

FL · Aug 5, 2025

Oglethorpe, Inc.

Healthcare Provider

92,332individuals

Hacking/IT IncidentUnder investigation

CA · Aug 5, 2025

South Coast Pediatrics

Healthcare Provider

7,000individuals

Hacking/IT IncidentUnder investigation

CO · Aug 1, 2025

DaVita Inc.

Healthcare Provider

2,689,826individuals

Hacking/IT IncidentUnder investigation

IL · Jul 29, 2025

Alera Group, Inc.

Business Associate

174,378individuals

Hacking/IT IncidentArchived

LA · Jul 29, 2025

AVALA Holdings

Healthcare Provider

22,732individuals

Hacking/IT IncidentArchived

FL · Jul 29, 2025

University of Miami

Healthcare Provider

2,928individuals

Unauthorized Access/DisclosureArchived

RI · Jul 28, 2025

Wood River Health

Healthcare Provider

54,926individuals

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.