- State
- WA
- Covered entity type
- Healthcare Provider
- Individuals affected
- 179,189
- Business associate present
- Yes
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
The covered entity (CE), MultiCare Health System, reported that its business associate experienced a ransomware attack affecting the electronic protected health information (ePHI) of approximately 179,189 individuals. The ePHI involved included names, dates of birth, clinical information, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.