Healthcare providers, insurers, and business associates appear regularly in Washington Attorney General breach notifications when medical or health-insurance data is exposed. Unlike California’s name-only list, Washington publishes Washingtonians-affected counts — making it possible to track healthcare-sector exposure by month.
Washington Healthcare Breaches by Month (AG, 2026)
The dashboard below tracks Washington Attorney General breach notifications in 2026 that exposed medical or health-insurance information, by month. So far that filter shows 28 reports and 314,767 Washingtonians affected, current through Aug 11, 2026.
Interactive Tracker
Washington Healthcare Breaches: 2026 AG Reports
Washingtonians affected by 2026 breaches exposing medical or health-insurance data, by month
Show largest 2026 Washington healthcare breach reports
| Entity | Published | Washingtonians affected | Sector |
|---|---|---|---|
| DentaQuest, LLC | Jul 16, 2026 | 91,700 | Healthcare / Medical |
| Medtronic Inc. | Jun 29, 2026 | 64,035 | Healthcare / Medical |
| Aesto, LLC (Grant County Public Hospital District #2) | Aug 4, 2026 | 37,253 | Healthcare / Medical |
| Xsolis, Inc. (Alexian Brothers Health System, Banner Health, Hendrick Medical Center dba Hendrick Health, Infirmary Health, Legacy Health, Mayo Clinic, Rochester Regional Health, UW Medicine, Virginia Hospital Center) | Jun 19, 2026 | 26,203 | Healthcare / Medical |
| Everside Health (Aesto, LLC) | Jul 31, 2026 | 21,308 | Healthcare / Medical |
Source: Washington State Attorney General - Data Breach Notifications, industry-filtered. Data current through Aug 11, 2026.
Sources
State AG breach portals
Notable Washington Healthcare Notices
| Organization | Washingtonians Affected | Date Published |
|---|---|---|
| DentaQuest, LLC | 91,700 | Jul 16, 2026 |
| Medtronic Inc. | 64,035 | Jun 29, 2026 |
| Aesto, LLC (Grant County Public Hospital District #2) | 37,253 | Aug 4, 2026 |
| Xsolis, Inc. (Alexian Brothers Health System, Banner Health, Hendrick Medical Center dba Hendrick Health, Infirmary Health, Legacy Health, Mayo Clinic, Rochester Regional Health, UW Medicine, Virginia Hospital Center) | 26,203 | Jun 19, 2026 |
| Everside Health (Aesto, LLC) | 21,308 | Jul 31, 2026 |
Why Email Security Matters Here
Many healthcare breaches begin with phishing or compromised email — a common path to AG notifications involving ePHI. Washington’s breach notification law requires timely reporting when personal information of state residents is exposed.
Check any practice’s posture at audit.emailmenow.com/?industry=healthcare-practices&state=washington.
Source: Washington AG — Data Breach Notifications
Related trackers
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- Washington healthcare breaches (2026)
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- CA August roundup
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- HIBP August roundup
- Breach data week (August)
- HHS OCR July roundup
- SEC 8-K July roundup
Sources
State AG breach portals
State AG reporting & notices
Federal registries
Breach databases & aggregators
News & analysis