Every public data breach

47 disclosed this week · 26,367 on record

MSO of Puerto Rico

Disclosed Feb 17, 20101,907 affectedConfirmed

Official notice

The covered entity's (CE) business associate (BA) erroneously merged two lists which led to the disclosure of protected health information (PHI) of 1,907 individuals. The PHI included names, internal identification numbers, and the number of emergency room visits. Upon discovery of the breach, the CE's BA established a quality control process in order to ensure adequate safeguards for that letters that are sent by mail. As a result of OCR's investigation, the CE created and implemented additional policies and procedures for quality control of mailings. The CE also provided training to all staff on its revised privacy and security policies and procedures. \ \ \

What is known

People affected1,907 (as reported to HHS)
DisclosedFeb 17, 2010
AttackLost or stolen device
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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