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The University of Massachusetts Chan Medical School

ArchivedSubmitted 08/21/2023
State
MA
Covered entity type
Business Associate
Individuals affected
135,394
Business associate present
Yes
Type of breach
Hacking/IT Incident
Location of breached information
Network Server
First seen by InfoSec Signals
9/23/2026
Last seen in OCR export
9/23/2026

OCR description

The covered entity (CE), The University of Massachusetts Chan Medical School, reported that it was the subject of a cyber-attack that affected the protected health information (PHI) of 135,974 individuals. The PHI involved included names, dates of births, addresses, Social Security numbers, diagnoses, medications, financial and claims information, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach, the CE provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards to better protect its PHI.

Change history

  • 9/23/2026Added to OCR's archive list

Source: U.S. Department of Health and Human Services, Office for Civil Rights, Breach Portal. Records are reproduced as published; entity names and figures are OCR's.