Breachesby GlyphMayo Clinic
Disclosed Oct 5, 20201,614 affectedConfirmed
Mayo Clinic, the covered entity (CE), reported that a workforce member impermissibly accessed the protected health information (PHI) of 1,614 individuals. The PHI involved included names, addresses, dates of birth, diagnoses, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, the media, local law enforcement, and the FBI. In response to the breach, the CE implemented additional technical and administrative safeguards.
What is known
| People affected | 1,614 (as reported to HHS) |
|---|---|
| Disclosed | Oct 5, 2020 |
| 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.1,152 affectedHealthcareUSNov 3, 2023Insider 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.