Artemis Healthcare

Disclosed Dec 23, 202545,867 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	NamesHealth
Sector	Healthcare · US
Status	Confirmed

Sources

Official noticeago.vermont.gov

Vermont Attorney General: 2025-12-23 Artemis Healthcare Data Breach Notice to Consumers

Official noticeocrportal.hhs.gov

HHS OCR breach report (archive, resolved): Artemis Healthcare (Healthcare Provider, TN)

Notices filed

Residents of VTDec 23, 2025

Vermont AGCount not stated

TotalDec 23, 2025

HHS archive45,867 people

History of this record

attack2026-09-25

unknown to hackingby backfillSource

data_types2026-09-25

[] to ["names","health"]by backfillSource

records_basis2026-09-25

empty to hhsby backfillSource

records2026-09-25

empty to 45867by backfillSource

summary2026-09-25

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 by backfillSource

Added2026-09-25

First recordedby backfillSource

First seen 2026-09-25 (Vermont AG), confirmed by Vermont AG. Record counts are as reported. Not legal advice.

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