HHS OCR report · 2010
Mayo Clinic data breach
OCR report facts
- Covered entity
- Mayo Clinic
- Entity type
- Healthcare Provider
- State
- Minnesota
- Individuals affected
- 1,740
- Submission date
- Sep 8, 2010
- Type of breach
- Theft
- Location of breached information
- Electronic Medical Record
- Business associate present
- No
- Status
- Archive (closed)
OCR description
An employee of the covered entity (CE) impermissibly accessed medical records containing the protected health information (PHI) of 1,740 patients for a period of 4 �� years. The PHI affected by the breach included the demographic information of 691 individuals, and both demographic and clinical information of 1,049 individuals. Following the breach, the CE conducted an investigation, terminated the involved employee, re-trained its employees regarding patient privacy and access to PHI, and e...
Text as published on the HHS OCR breach portal.
Other reports by Mayo Clinic
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Mayo Clinic | MN | Healthcare Provider | 1,869 | Mar 28, 2025 | Unauthorized Access/Disclosure | Archive (closed) |
| Mayo Clinic | MN | Healthcare Provider | 1,152 | Nov 3, 2023 | Unauthorized Access/Disclosure | Archive (closed) |
| Mayo Clinic | MN | Healthcare Provider | 1,614 | Oct 5, 2020 | Unauthorized Access/Disclosure | Archive (closed) |
| Mayo Clinic | MN | Healthcare Provider | 1,902 | Mar 22, 2019 | Unauthorized Access/Disclosure | Archive (closed) |
Frequently asked questions
How many people were affected by the Mayo Clinic data breach?
The report to HHS OCR lists 1,740 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Sep 8, 2010.
What type of breach was it?
The OCR portal lists the type of breach as Theft, with the breached information located in: Electronic Medical Record.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Mayo Clinic legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Mayo Clinic.