Mainline Health Systems Data Breach Investigation
The data breach lawyers at The Lyon Firm are investigating a recent data breach reported at Mainline Health Systems, potentially impacting over 101,000 individuals. The incident involved unauthorized access to sensitive patient information, with both personally identifiable information (PII) and protected health information (PHI) allegedly compromised.
Contact our legal team to discuss taking legal action and to learn more about the next steps following a data privacy violation that impacts you and your family. It is important to understand the increased risks of identity theft and fraud following data theft incidents. Call now for a free consultation and case review.
What Happened at Mainline Health Systems?
Mainline Health Systems Inc, a healthcare provider based out of Monticello, Arkansas, reported a data breach to the Maine Attorney General that may have compromised the personal data of 101,104 individuals nationwide.
On May 21, 2025, Mainline Health discovered that compromised data included full name, date of birth, Social Security Number, U.S. driver’s license number, financial account and payment card numbers, medical record number, patient ID, Medicaid number, health insurance policy and group numbers, medical diagnosis and treatment details, clinical and prescription information, provider location and provider name.
Recently, Mainline posted a notice of the incident on its website. On June 20, 2025, Mainline started sending data breach notification letters to all known impacted individuals which should provide more details regarding the data compromised.
The attorneys at The Lyon Firm believe very strongly that any healthcare entity that collects your sensitive personal data has a duty to protect it with strong IT security. If any company is negligent in protecting data, a class action data breach lawsuit can be considered.
We have filed numerous complaints on behalf of plaintiffs in all fifty states. Settlements can hold companies accountable and can compensate victims for related damages. Call our lawyers for a consult and case review.