Mayo Clinic
Disclosed Nov 3, 20231,152 affectedConfirmed
Mayo Clinic, the covered entity (CE), reported that an employee inadvertently submitted the protected health information (PHI) of 1,152 individuals to an academic journal; the data was then published via the Internet. The PHI involved included names, dates of birth, lab results, medical records numbers, gender, race, and treatment information. The CE notified HHS and affected individuals. In its mitigation efforts, the CE implemented additional administrative safeguards to better protect PHI. Staff were retrained.
What is known
| People affected | 1,152 (as reported to HHS) |
|---|---|
| Disclosed | Nov 3, 2023 |
| Attack | Insider |
| Data exposed | NamesHealth |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
Other breaches at Mayo Clinic
Insider breachInsider exposed names and health records. Reported to the HHS archive.1,869 affectedHealthcareUSMar 28, 2025Insider breachInsider exposed names and health records. Reported to the HHS archive.1,614 affectedHealthcareUSOct 5, 2020Insider breachInsider exposed names and health records. Reported to the HHS archive.1,902 affectedHealthcareUSMar 22, 2019Lost or stolen device breachLost or stolen device exposed names and health records. Reported to the HHS archive.1,740 affectedHealthcareUSSep 8, 2010
History of this record
First recordedby backfillSource
First seen 2026-09-25 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.