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HHS OCRState AGConfirmed2 filings · 2 statesLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedmoderate sensitivity
Merged incident · 2 filings

Marshfield Clinic Health System, Inc.

Clustered 2 filings across 2 jurisdictions · filing window Nov 1, 2025 → Nov 7, 2025. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

2 filings

States

2

Affected · reported

35,952

First → last filing

Nov 1, 2025 → Nov 7, 2025

Merge confidence

100%

incident inc_a402eae033c74f7c · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 2 regulatory filings. The filing describes unauthorized access. Discovered Sep 25, 2025 — the first regulatory filing landed 37 days later. 35,952 individuals reported across the linked filings. Data reported: Health (basic), PHI, and Identity (basic). Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay
37days

Discovered → first regulatory filing

Filing span
6days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.

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