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Leak SiteHHS OCRState AGConfirmed3 filings · 1 stateLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedgenesismoderate sensitivity
Merged incident · 3 filings

Stockton Cardiology Medical Group — December 2025 breach

Clustered 3 filings across 2 jurisdictions · filing window Feb 17, 2026 → Mar 20, 2026. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

3 filings

States

1

Affected · reported

90,000

First → last filing

Feb 17, 2026 → Mar 20, 2026

Merge confidence

100%

incident inc_b274e1c1c612424c · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 2 regulatory filings and 1 unverified claim. The filing describes unauthorized access. Intrusion Dec 15, 2025, discovered Jan 17, 2026 — the first regulatory filing landed 60 days later (flagged late). 90,000 individuals reported across the linked filings. Data reported: PHI, Health (basic), Identity (basic), and 1 more. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay
60days

Discovered → first regulatory filing

Leak precedence
29days before filing

Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span
31days

Time between earliest and latest filing

Not recorded for this incident

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

Regulatory clocksCalifornia✗ CA 30-day late · 51dHIPAA✓ HHS notifiedFull clock table in Litigation Timeline

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