• June 2025 •

McLaren Health Care Data Breach

Last Updated on June 23, 2025

If you received a notice that your information was compromised, you may be able to start a class action to collect money for the harm you’ve suffered.

• Keep reading for more information

At A Glance

What's Going On?: Attorneys need to hear from people affected by the McLaren Health Care data breach as they investigate whether a class action lawsuit can be filed.
What You Can Do: If you got a letter or email about the data breach, fill out the form on this page to learn more about the investigation and how you can help.
Does This Cost Anything?: It costs nothing to get in touch or to talk to someone about your rights.
What Can I Get?: If filed and successful, a class action lawsuit could provide consumers with money for any harm resulting from the breach.

McLaren Health Care Data Breach: Lawsuit Investigation

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the McLaren Health Care data breach.

As part of their investigation, they need to hear from individuals who received a notice stating they were impacted.

McLaren Health Care Security Incident: What Happened?

McLaren Health Care, based in Grand Blanc, Michigan, is alerting individuals about a data breach that exposed the personal information of 743,131 individuals. The organization, which runs 12 hospitals across Michigan, numerous outpatient centers, a large physician network, health insurance plans, and Michigan’s largest network of cancer centers led by the Karmanos Cancer Institute, discovered suspicious activity on its computer systems in early August 2024. An investigation revealed that an international ransomware group accessed the McLaren Health Care and Karmanos Cancer Institute network from July 17 to August 3, 2024.

After collaborating with forensic specialists, McLaren Health Care learned that files containing names, Social Security numbers, driver’s license numbers, medical details, and health insurance information were accessed without authorization. Written notifications to individuals affected by the McLaren Health Care data breach began around June 20, 2025.

What You Can Do After the McLaren Health Care Data Breach

If your information was exposed in the data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, time spent dealing with the breach, out-of-pocket costs, and more.

A successful case could also force McLaren Health Care to ensure it takes proper steps to protect the information it was entrusted with.

Got a notice about the McLaren Health Care data breach? Fill out the form on this page today.