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Highlands Oncology Group

Disclosed Dec 22, 20232 years ago55,297 affectedConfirmed

Official notice

The covered entity (CE), Highlands Oncology Group, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 55,297 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, claims information, diagnoses, conditions, lab results, medications, and other treatment information. The CE notified HHS, the affected individuals, and the media. In response to the breach, the CE implemented additional system monitoring safeguards, revised policies regarding remote access, and implemented additional technical safeguards.

What is known

People affected55,297 (as reported to HHS)
DisclosedDec 22, 2023
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
HHS archivetotalDec 22, 202355,297

Other breaches at Highlands Oncology Group

BreachAffected
Disclosed Aug 1, 2025Aug 1, 20251 year agoHacking112K
History of this record
  • 2026-09-25 · added · backfill source

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

Everything about Highlands Oncology Group

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