HHS OCR report ยท 2021
Missouri Delta Medical Center data breach
OCR report facts
- Covered entity
- Missouri Delta Medical Center
- Entity type
- Healthcare Provider
- State
- Illinois
- Individuals affected
- 9,745
- Submission date
- Oct 21, 2021
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Archive (closed)
OCR description
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 tra...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Missouri Delta Medical Center data breach?
The report to HHS OCR lists 9,745 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Oct 21, 2021.
What type of breach was it?
The OCR portal lists the type of breach as Hacking/IT Incident, with the breached information located in: Network Server.
Is the investigation still open?
No. The report is in the OCR portal archive, which holds reports where OCR has closed its review.
Is a breach notice letter from Missouri Delta Medical Center legitimate?
This site cannot verify letters. Check the sender against the organisation's official website and the HHS OCR breach portal, and avoid calling numbers or clicking links only listed in an unexpected message. See our guide on what to do after a data breach notice.
Source: HHS OCR Breach Portal, OCR export October 2026. Network USA is not affiliated with HHS or Missouri Delta Medical Center.