Chelan Douglas Health District
Disclosed Mar 15, 20224 years ago188,236 affectedConfirmed
The covered entity (CE), Chelan Douglas Health District, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 188,236 individuals. The PHI involved included names, dates of birth, drivers’ license numbers, Social Security numbers, claims and financial information, diagnoses, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In its mitigation efforts, the CE implemented additional administrative and technical safeguards to better protect its PHI.
What is known
| People affected | 188,236 (as reported to HHS) |
|---|---|
| Disclosed | Mar 15, 2022 |
| Discovered | Jul 5, 2021 |
| Happened | Jul 2, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Washington Attorney General breach notice: Chelan Douglas Health Districtatg.wa.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Chelan Douglas Health District (Healthcare Provider, WA)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Washington AGresidents of WA | Mar 15, 2022 | 108,906 |
| HHS archivetotal | Mar 15, 2022 | 188,236 |
History of this record
- 2026-09-25 · data_types: [] to ["names","health"] · backfill source
- 2026-09-25 · records_basis: empty to hhs · backfill source
- 2026-09-25 · records: empty to 188236 · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Chelan Douglas Health District, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 188,236 individuals. The PHI involved included names, dates of birth, drivers’ l · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Washington AG), confirmed by Washington AG. Record counts are as reported. Not legal advice.