Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Health Management Systems of America

Disclosed Oct 27, 20254,265 affectedConfirmed

Official notice

What is known

People affected4,265 (as reported by the organization)
DisclosedOct 27, 2025
HappenedNov 11, 2024
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report: Health Management Systems of America (Healthcare Provider, MI)
Official noticeago.vermont.gov
Vermont Attorney General: 2026-03-22 Health Management Systems of America - Data Breach Notice to Consumers
Official noticein.gov
Indiana Attorney General 2026 data breach report: Health Management Systems of America

Notices filed

TotalOct 27, 2025
HHS OCR4,213 people
Residents of INFeb 9
Indiana AG3 people
Residents of VTMar 22
Vermont AGCount not stated
History of this record
records_basis2026-09-25
hhs to organizationby backfillSource
records2026-09-25
4213 to 4265by backfillSource
occurred2026-09-25
empty to 2024-11-11by backfillSource
source2026-09-25
empty to https://ago.vermont.gov/document/2026-03-22-health-management-systems-america-data-breach-notice-consumersby backfillSource
Added2026-09-25
First recordedby backfillSource

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

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