Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Emergency Healthcare Physicians

Disclosed Apr 29, 2010180,111 affectedConfirmed

Official notice

Stolen billing-service hard drive held records of 180,000 Chicago-area patients

An unencrypted portable hard drive with records from 2003 to 2006 was stolen on February 27, 2010 at billing contractor Millennium Medical Management Resources in Westmont, Illinois, affecting about 180,000 patients.

What is known

People affected180,111 (as reported by the organization)
DisclosedApr 29, 2010
DiscoveredFeb 27, 2010
AttackLost or stolen device
Data exposedNamesSocial Security numbersDates of birthHealth
SectorHealthcare · US
StatusConfirmed

Sources

Regulatorocrportal.hhs.gov
HHS Office for Civil Rights breach portal (archive): Breaches Affecting 500 or More Individuals
Newsweb.archive.org
Chicago Breach Affects 180,000 - HealthcareInfoSecurity

Notices filed

TotalApr 29, 2010
Research180,111 people
History of this record
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.

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