Oregon Anesthesiology Group
Disclosed Dec 6, 20214 years ago750,500 affectedConfirmed
The covered entity (CE), Oregon Anesthesiology Group, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 750,500 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, diagnoses, and claims information. The CE notified HHS, affected individuals, and the media. In response to the breach the CE implemented additional administrative and technical safeguards to better protect PHI.
What is known
| People affected | 750,500 (as reported to HHS) |
|---|---|
| Disclosed | Dec 6, 2021 |
| Discovered | Jul 11, 2021 |
| Happened | Jul 3, 2021 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Oregon DOJ breach notice: Oregon Anesthesiology Groupjustice.oregon.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Oregon Anesthesiology Group (Healthcare Provider, OR)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Oregon DOJresidents of OR | Dec 6, 2021 | 750,500 |
| HHS archivetotal | Dec 6, 2021 | 750,500 |
History of this record
- 2026-09-25 · sector: other to health · backfill source
- 2026-09-25 · attack: unknown to hacking · backfill source
- 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 750500 · backfill source
- 2026-09-25 · summary: empty to The covered entity (CE), Oregon Anesthesiology Group, reported that it experienced a ransomware attack that affected the protected health information (PHI) of 750,500 individuals. The PHI involved included names, addresses, dates of birth, · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Oregon DOJ), confirmed by Oregon DOJ. Record counts are as reported. Not legal advice.