- State
- WA
- Covered entity type
- Healthcare Provider
- Individuals affected
- 18,389
- Business associate present
- Yes
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- 9/23/2026
- Last seen in OCR export
- 9/23/2026
OCR description
UW Medicine, the covered entity (CE), reported that its business associate experienced a ransomware attack that affected the electronic protected health information (ePHI) of 18,389 individuals. The ePHI involved included names, dates of birth, and medications prescribed. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional technical safeguards and retrained its staff.
Change history
- 9/23/2026Added to OCR's archive list
Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.