HHS OCR report ยท 2025
Ascension Health data breach
Ascension Health, a healthcare provider in Missouri, reported a breach affecting 437,329 individuals to HHS OCR on Apr 28, 2025.
OCR report facts
- Covered entity
- Ascension Health
- Entity type
- Healthcare Provider
- State
- Missouri
- Individuals affected
- 437,329
- Submission date
- Apr 28, 2025
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- Business associate present
- No
- Status
- Under investigation
Other reports by Ascension Health
| Covered entity | State | Entity type | Individuals | Submitted | Type of breach | Status |
|---|---|---|---|---|---|---|
| Ascension Health | MO | Healthcare Provider | 5,466,931 | Jul 3, 2024 | Hacking/IT Incident | Archive (closed) |
Frequently asked questions
How many people were affected by the Ascension Health data breach?
The report to HHS OCR lists 437,329 individuals affected.
When was it reported to HHS?
It was submitted to HHS OCR on Apr 28, 2025.
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?
Yes. The OCR portal lists this report as under investigation.
Is a breach notice letter from Ascension Health 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 Ascension Health.