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44 disclosed this week · 26,355 on record

Patterson Dental Supply/Patterson Companies

Disclosed Mar 12, 20136,400 affectedConfirmed

Official notice

An unknown individual hacked into the covered entity’s (CE) server which contained the electronic protected health information (ePHI) of approximately 6,400 individuals. The ePHI involved in the breach included names, addresses, dates of birth, social security numbers, payment information, and treatment information. The CE provided breach notification to HHS, affected individuals, and the media. Following the breach, the CE improved safeguards by installing a new firewall and filtering technology. Additionally, OCR’s investigation resulted in the CE retraining its employees.

What is known

People affected6,400 (as reported to HHS)
DisclosedMar 12, 2013
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

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

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