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Hayward Sisters Hospital d/b/a St. Rose Hospital

ArchivedSubmitted 01/27/2023
State
CA
Covered entity type
Healthcare Provider
Individuals affected
115,241
Business associate present
No
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), Hayward Sisters Hospital dba St. Rose Hospital, reported that it was the subject of a ransomware attack that affected the protected health information (PHI) of 115,241 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, drivers’ license and passport numbers, e-mail addresses, claims and financial information, diagnoses, lab results, medications, health insurance information, and other treatment information. The CE notified HHS, affected individuals, and the media. 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.