Ascension Health data breach
Ascension Health appears in 10 breach notices filed with HHS OCR, New Hampshire DOJ, California AG, Oregon DOJ, Washington AG, Montana DOJ and Maryland AG, most recently reported on April 28, 2025.
Breach notices filed with regulators
| Reported | Filed with | Breach date(s) | People affected | Data involved | Source |
|---|---|---|---|---|---|
| Apr 28, 2025 | HHS OCR | Not listed | 437,329 people (total reported to HHS) | Not listed | HHS OCR list ↗ |
| Feb 7, 2025 | New Hampshire DOJ | Not listed | Not listed | Not listed | Notice ↗ |
| Feb 3, 2025 | California AG | Feb 29, 2024 | Not listed | Not listed | California AG list ↗ |
| Feb 3, 2025 | Oregon DOJ | Feb 29, 2024 – May 8, 2024 | 5,466,931 Oregon residents | Not listed | Oregon DOJ list ↗ |
| Dec 19, 2024 | California AG | Feb 29, 2024, Jun 11, 2024 | Not listed | Not listed | California AG list ↗ |
| Dec 19, 2024 | Washington AG | Feb 29, 2024 – Jun 11, 2024 | 5,787 Washington residents | Financial & Banking InformationFull Date of BirthMilitary ID NumberPassport NumberHealth Insurance Policy or ID NumberMedical InformationNameSocial Security NumberDriver's License or Washington ID Card Number | Washington AG list ↗ |
| Dec 19, 2024 | Oregon DOJ | Not listed | 5,599,699 Oregon residents | Not listed | Oregon DOJ list ↗ |
| Dec 19, 2024 | Montana DOJ | May 7, 2024 – May 8, 2024 | 4,568 Montana residents | Not listed | Notice ↗ |
| Dec 19, 2024 | Maryland AG | Not listed | 22,293 Maryland residents | NameMedical informationHealth insurance information | Notice ↗ |
| May 5, 2021 | Montana DOJ | Feb 6, 2021 | 4,650 Montana residents | Not listed | Notice ↗ |
Each row is a notice as published by the agency. For state lists, the number affected counts only that state's residents; HHS lists the total reported. SEC rows are Form 8-K Item 1.05 filings, which usually don't give a count. A notice does not mean a settlement exists, and a settlement may cover a different incident than a given notice.
Is there a settlement?
We don't track an open class-action settlement for Ascension Health right now. Settlements usually come months or years after a breach. Follow Ascension Health and we'll email you if one opens.
What you can do now
- Read the notice letter if you got one. It says what data was involved and may offer free credit monitoring with an enrollment deadline.
- Consider a free credit freeze at Equifax, Experian and TransUnion, especially if your Social Security number was involved.
- Change reused passwords and turn on two-factor authentication.
- Watch your bank, card and insurance statements for activity you don't recognize.
Follow Ascension Health
Get an email when Ascension Health has an open settlement: when one is announced, a weekly reminder with the deadline and days left, and a heads-up if the deadline moves. Nothing about other companies unless you ask for it.
Free. At most one email a week, and only when there is something to act on. One-click unsubscribe in every email. Privacy