McKenzie Memorial Hospital Data Breach Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the McKenzie Memorial Hospital data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About McKenzie Memorial Hospital
McKenzie Memorial Hospital, also known as McKenzie Health System, is a healthcare provider based in Sanilac County, Michigan. Founded in 1967, medical services offered include family medicine, orthopedics, and community wellness programs.
The hospital has 62 employees listed on LinkedIn.
What Happened?
In April 2025, McKenzie Memorial Hospital discovered suspicious activity on its network. An investigation determined that an unauthorized actor accessed network files between April 14, 2025, and April 15, 2025.
By June 19, 2025, the hospital completed its review and determined that the breach had potentially exposed the personal information of 54,016 individuals across the United States.
Information Types Exposed:
- Personally Identifiable Information (PII)
- First and last name
- Address
- Phone number
- Email address
- Social Security number
- Driver’s license or state ID number
- Date of birth
- Employee bank account number and/or treatment cost information
- Financial account information
- Protected Health Information (PhI)
- Medical diagnosis
- Date of service
- Patient account number
- Medical record number
- Health insurance claim number
- Health insurance policy number
The breach was reported to the Maine, Massachusetts and New Hampshire Attorney General’s offices on July 24, 2025.
Your Rights and Next Steps
If you received a notification from McKenzie Memorial Hospital, it means your information may have been involved in this breach. Even if you have not noticed any suspicious activity yet, it is important to take proactive steps to protect your identity and finances.
Steps you can take:
- Enroll in the complimentary credit monitoring and identity protection services offered by McKenzie Memorial Hospital. Details and instructions are included in the notification letter.
- Review your credit reports from TransUnion, Experian and Equifax for any unfamiliar accounts or inquiries. You are entitled to one free credit report per year from each bureau.
- Consider placing a fraud alert or credit freeze on your credit file to prevent unauthorized activity.
- Monitor your bank accounts, insurance statements and other financial records for any signs of fraud.
- Report any suspicious activity to your financial institution, law enforcement and your state Attorney General.
- Stay informed by reading the official notice from McKenzie Memorial Hospital and the resources provided by the Federal Trade Commission.
Lawyers are ready to help individuals affected by the McKenzie Memorial Hospital data breach. If your information was exposed, you may have legal rights and could be eligible for compensation.
You May Be Entitled to Compensation
If you were notified that your information was part of the McKenzie Memorial Hospital data breach, you may be entitled to compensation for the risk and potential harm caused by the exposure of your sensitive data. Lawyers are investigating claims on behalf of affected individuals and are ready to help guide you through your options.
To find out if you qualify and to join a lawsuit, complete the below form. It only takes a few minutes and there is no cost to get started.