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44 disclosed this week · 26,355 on record

Missouri Delta Medical Center

Disclosed Oct 21, 20219,745 affectedConfirmed

Official notice

The covered entity (CE), Missouri Delta Medical Center, reported that it was the victim of a ransomware attack affecting the protected health information (PHI) of 9,745 individuals. The PHI involved included names, diagnoses, telephone numbers, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE implemented additional technical safeguards and provided HIPAA, cybersecurity, and phishing awareness training to its employees.

What is known

People affected9,745 (as reported to HHS)
DisclosedOct 21, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

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

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