Artemis Healthcare
Disclosed Dec 23, 20259 months ago45,867 affectedConfirmed
Artemis Healthcare, the covered entity (CE), reported that it experienced a ransomware attack that affected the protected health information (PHI) of 45,867 individuals. The PHI included clinical, demographic and financial information. The CE notified HHS, the affected individuals, the media and posted substitute notice on its website. In its mitigation efforts, the CE implemented additional technical, administrative and security safeguards, including hiring a third-party managed service provider to manage all IT. .
What is known
| People affected | 45,867 (as reported to HHS) |
|---|---|
| Disclosed | Dec 23, 2025 |
| Attack | Hacking |
| Data exposed | Names, Health |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Vermont Attorney General: 2025-12-23 Artemis Healthcare Data Breach Notice to Consumersago.vermont.gov · Official notice | Official notice |
| HHS OCR breach report (archive, resolved): Artemis Healthcare (Healthcare Provider, TN)ocrportal.hhs.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Vermont AGresidents of VT | Dec 23, 2025 | |
| HHS archivetotal | Dec 23, 2025 | 45,867 |
History of this record
- 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 45867 · backfill source
- 2026-09-25 · summary: empty to Artemis Healthcare, the covered entity (CE), reported that it experienced a ransomware attack that affected the protected health information (PHI) of 45,867 individuals. The PHI included clinical, demographic and financial information. The · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (Vermont AG), confirmed by Vermont AG. Record counts are as reported. Not legal advice.