Marshfield Clinic Health System : breach report submitted 2025-11-07 (35,952 individuals)
Marshfield Clinic Health System (Wisconsin): breach report submitted 2025-11-07 (35,952 individuals). Its individuals affected of 35,952 is above the median of 6,195 (76th percentile). Dated 362 days ago, it serves as a historical benchmark. Score 60/100. As of 2026-11-03, from HHS Office for Civil Rights breach portal (breaches affecting 500+ individuals).
Data as of · Compiled by Zalwin from HHS Office for Civil Rights breach portal (breaches affecting 500+ individuals)
individuals affected: 35,952 · 76th percentile of 715 HipaaBreachPulse records · 5.8x the median
Free preview: all 8 published fields of this record are shown below. Locked: 11 related WI HipaaBreachPulse records and the 5-column CSV export.
| Field | Value |
|---|---|
| Organization | Marshfield Clinic Health System |
| State | WI |
| Entity type | Healthcare Provider |
| Individuals affected | 35,952 |
| Report submitted | 2025-11-07 |
| Breach type | Hacking/IT Incident |
| Location of information | |
| Business associate present | No |
| individuals affected percentile | 76th of 715 (median 6,195, 5.8x median) |
| Peer records CSV (12 WI records) | 🔒 Click to unlock → |
| CRM-ready export with official source URLs | 🔒 Click to unlock → |
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CSV columns: Organization · State · Breach type · Individuals affected · Submitted · official source URL
- Source agency: HHS Office for Civil Rights breach portal (breaches affecting 500+ individuals)
- Record date: 2025-11-07
- Data refreshed: 2026-11-03
- Refunds on request within 14 days
Top HipaaBreachPulse records (WI first): Health Payment Systems, Inc. · Delta Medical Systems · Aesto, LLC · Unlimited Technology Systems, LLC · CareCloud, Inc. · Browse all by state and category →
LIVE PUBLIC DATA Source: HHS Office for Civil Rights breach portal (breaches affecting 500+ individuals) · Last refreshed: Tue, 03 Nov 2026 19:38:30 GMT
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Peer benchmark and outreach value: Marshfield Clinic Health System and 12 Wisconsin peers
- Wisconsin HipaaBreachPulse records like this one: 12
- Marshfield Clinic Health System's individuals affected: 76th percentile of 715 records
- Timing: Low: older than 30 days
- Estimated pipeline if you contact every Wisconsin peer: $2,400 (peers × rate × deal size; an estimate from your assumptions, not a forecast)
60 / 100 Security Need Score
- 10,000+ individuals affected.
- Hacking/IT incident (security tooling need).
What is the HipaaBreachPulse record for Marshfield Clinic Health System in Wisconsin?
Marshfield Clinic Health System (WI) submitted a breach report to HHS OCR on 2025-11-07 describing a hacking/it incident affecting 35,952 individuals.
How does Marshfield Clinic Health System compare to other Wisconsin HipaaBreachPulse records?
Its individuals affected of 35,952 sits in the upper half (76th percentile) of 715 records; the median is 6,195. It is 362 days old; check the official source for later updates before acting.
Marshfield Clinic Health System vs. top 3 peers
| Organization | Location | Amount | Percentile | Record date |
|---|---|---|---|---|
| Marshfield Clinic Health System | WI | 35,952 | 76th | 2025-11-07 |
| Morton Drug Company | WI | 40,051 | 77th | 2025-11-10 |
| Clement Manor | WI | 16,046 | 63rd | 2025-06-25 |
| Health Payment Systems, Inc. | WI | 9,380 | 56th | 2026-07-10 |
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HipaaBreachPulse: records in Wisconsin HipaaBreachPulse: Healthcare provider HipaaBreachPulse: Hacking/IT incident
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As listed on the HHS OCR breach portal, which shows reports currently under investigation; a listing is the organization's own report to HHS, not a finding of fault. Organizations only. Informational only. Listed in error or need a correction? Request a correction or removal.