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Cancer and Hematology Centers of Western Michigan
ArchivedSubmitted 03/18/2022
Updated 18 hours ago ()
- State
- MI
- Covered entity type
- Healthcare Provider
- Individuals affected
- 43,071
- Business associate present
- No
- Type of breach
- Hacking/IT Incident
- Location of breached information
- Network Server
- First seen by InfoSec Signals
- Sep 23, 2026
- Last seen in OCR export
- Oct 25, 2026
OCR description
Cancer and Hematology Centers of Western Michigan, the covered entity (CE), reported that it experienced a ransomware attack that affected the protected health information (PHI) of 43,071 individuals. The PHI involved included names, addresses, dates of birth, social security numbers, financial information, and diagnoses and conditions. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE provided complimentary credit monitoring to affected individuals and implemented multi-factor authentication and additional technical safeguards.
Change history
- Sep 23, 2026Added to OCR's archive list
Source: HHS OCR Breach Portal, U.S. Department of Health and Human Services, Office for Civil Rights about this source
Records are reproduced as published; entity names and figures are OCR's.