Regulator-posted notice

Breach notice filed by Medical College of Wisconsin (September 2016)

Organization named: Medical College of Wisconsin Provisional: identity as filed, not yet matched to the directory
Type as the source lists it: Hacking/IT Incident

What the sources say

HHS OCR breach portal (HIPAA breaches affecting 500 or more individuals) Primary notice

Posted on the HHS Office for Civil Rights breach portal with a submission date of Sept. 2, 2016.

Organization as reported: Medical College of Wisconsin, WI
Entity type as reported: Healthcare Provider
Category as reported: Hacking/IT Incident
Location of information as reported: Email
Submission date: Sept. 2, 2016
Observed by BreachRecords: 2026-10-18 16:15 UTC (revision 14435, row:5574)
Archived copy: Held in the private archive (provenance)

An unauthorized third-party comprised the protected health information (PHI) found in an employee’s email account for a period of three days. The compromised email account contained the PHI of 3,225 individuals. The types of PHI involved in the breach included full names, home addresses, dates of birth, medical record numbers, diagnoses, and/or treatment information, and the social security numbers of two patients. The covered entity (CE), Medical College of Wisconsin, provided breach notification to HHS, affected individuals, and the media and also posted a substitute notice. Following the breach, the CE retained a forensic firm, retrained the employee with the compromised email account, and implemented new safeguards. OCR obtained written assurances that the CE implemented the actions listed above.
The source's own words, from the revision above.

Figures, per source

3,179 individuals affected (total reported), according to the HHS Office for Civil Rights breach portal, source date Sept. 2, 2016, revision observed 2026-10-18.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

2016-09-02Submission date (HHS Office for Civil Rights breach portal)
2026-10-18Observed by BreachRecords (revision 14435)
2026-10-19Approved by a reviewer

Organizations linked by a reviewer

Medical College of Wisconsin Named as the covered entity Provisional: identity as filed, not yet matched to the directory Linked 2026-10-19, method provisional.

Archived evidence

3dbc27dd5742e041cc1e7fe18cc669e2901fbd3b86b7007ed27948ff4d406e1f
text/csv, 5,530,996 bytes, retrieved from HHS Office for Civil Rights breach portal, 2026-10-18 16:15 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

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