Regulator-posted notice

Breach notice filed by King County Public Hospital District No. 2 d/b/a EvergreenHealth (April 2022)

Organization named: King County Public Hospital District No. 2 d/b/a EvergreenHealth Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of April 22, 2022.

Organization as reported: King County Public Hospital District No. 2 d/b/a EvergreenHealth, WA
Entity type as reported: Healthcare Provider
Category as reported: Hacking/IT Incident
Location of information as reported: Network Server
Submission date: April 22, 2022
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 11504, row:2643)
Archived copy: Held in the private archive (provenance)

The covered entity (CE), King County Public Hospital District No. 2 dba EvergreenHealth, reported that is business associate suffered a ransomware attack affecting the protected health information (PHI) of 20,533 individuals. The PHI involved included names, diagnoses, medications prescribed, dates of birth, and other treatment information. The CE notified HHS, affected individuals, and the media. In response to the breach, the CE implemented additional technical safeguards to better protected its PHI.
The source's own words, from the revision above.

Figures, per source

20,533 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date April 22, 2022, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

2022-04-22Submission date (HHS Office for Civil Rights breach portal)
2026-10-18Observed by BreachRecords (revision 11504)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

King County Public Hospital District No. 2 d/b/a EvergreenHealth Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

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