HHS OCR report · 2023
Jefferson County Health Center d/b/a Jefferson County Health Department data breach
OCR report facts
- Covered entity
- Jefferson County Health Center d/b/a Jefferson County Health Department
- Entity type
- Healthcare Provider
- State
- Missouri
- Individuals affected
- 115,940
- Submission date
- Jan 13, 2023
- 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), Jefferson County Health Center dba Jefferson County Health Department, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 115,940 individuals. The PHI involved included names, Social Security numbers, dates of birth, addresses, drivers’ license numbers, diagnoses, lab results, medications, claims and financial information, and other treatment information. The CE notified HHS, affected individuals, the media, and ...
Text as published on the HHS OCR breach portal.
Frequently asked questions
How many people were affected by the Jefferson County Health Center d/b/a Jefferson County Health Department data breach?
The report to HHS OCR lists 115,940 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Jan 13, 2023.
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 Jefferson County Health Center d/b/a Jefferson County Health Department 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 Jefferson County Health Center d/b/a Jefferson County Health Department.