Every public data breach

44 disclosed this week · 26,355 on record

Transformative Healthcare

Disclosed Dec 27, 2023911,757 affectedConfirmed

Official notice

Fallon Ambulance Services (Fallon), a former subsidiary of Transformative Healthcare, the covered entity (CE), reported that it experienced a ransomware attack that compromised the protected health information (PHI) of 911,757 individuals. The PHI involved included names, addresses, birthdates, drivers’ license and Social Security numbers, diagnoses, lab results, medications, and claims and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In its mitigation efforts, the CE provided complimentary identity protection services to affected individuals. Fallon ceased medical transportation operations; therefore, OCR closed the case.

What is known

People affected911,757 (as reported by the organization)
DisclosedDec 27, 2023
DiscoveredApr 21, 2023
HappenedFeb 17, 2023
AttackRansomware
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to Fallon Ambulance Services (Fallon), a former subsidiary of Transformative Healthcare, the covered entity (CE), reported that it experienced a ransomware attack that compromised the protected health information (PHI) of 911,757 individuals. by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 911757by backfillSource
disclosed2026-09-25
2023-12-29 to 2023-12-27by backfillSource
attack2026-09-25
unknown to ransomwareby backfillSource
discovered2026-09-25
empty to 2023-04-21by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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