Mainline Health Systems
Data Breach Class Action Lawsuit

Posted: June 24, 2025 -- Attention, victims of the Mainline Health Systems data breach.

Abington Cole + Ellery is investigating the data breach recently announced by Mainline Health Systems.

Mainline Health Systems Data Breach Summary:

Approximately 101,000 individuals were affected by the Mainline Health Systems data breach, and breached data may include, but is not necessarily limited to: full names in combination with date of birth, Social Security Number, Date of Birth, US Drivers License data, Financial Account data, Financial Account Access data, Payment Card data, Payment Card Access data, Medical Record data, Patient ID data, Medicaid data, Health Insurance Policy data, Health Insurance Group data, Medical Diagnosis data, Medical Treatment Procedure data, Clinical data, Prescription data, Provider Location, Provider Name.

On or around April 10, 2024, Mainline Health Systems reportedly experienced a security incident that affected its computer network. After detecting the issue, the organization says it began an internal investigation and brought in external cybersecurity professionals to assist in assessing the situation. Federal law enforcement was also informed. A manual review of the compromised files was also purportedly conducted as part of this process.

By May 21, 2025, the investigation had revealed that some of the accessed or acquired files contained protected personal information. This unauthorized activity was reportedly linked directly to the April 10, 2024, incident and Mainline Health Systems determined that certain individuals’ data may have been exposed as a result.

Following the discovery, Mainline Health Systems says it began reviewing its existing data protection policies and staff training procedures. Steps were also reportedly taken to strengthen security systems and improve monitoring tools. The organization says it continues to assess and update its internal controls in an effort to safeguard sensitive information and reduce the likelihood of similar events in the future.

As a result of the data breach, Mainline Health Systems is offering 12 months of free credit monitoring and/or identity theft protection services to some affected individuals.

Additional information about the Mainline Health Systems data breach may be found here: Mainline Health Systems Notice of Data Security Incident, and here: Mainline Health Systems Data Breach Notification (Maine). The Mainline Health Systems Website may also have additional information about or provide periodic updates regarding the data breach.

About Mainline Health Systems:

Mainline Health Systems is a nonprofit healthcare organization headquartered in southeastern Arkansas. It operates multiple clinics and health centers across Ashley, Bradley, Chicot, Drew, and Lincoln counties. Founded in 1978, the organization was established to increase access to primary care services for residents in rural and underserved areas. It is designated as a Federally Qualified Health Center (FQHC) and receives federal funding to support its community-based model.

Mainline Health Systems delivers services including family medicine, pediatric care, behavioral health, dental care, and pharmacy support. The organization integrates preventive care with diagnostic and treatment services to serve individuals regardless of insurance status or ability to pay. It accepts public and private insurance programs and offers sliding fee scales to qualifying patients. Its clinical model emphasizes coordination across service areas to meet basic healthcare needs under one network.

The organization maintains partnerships with schools, public health agencies, and regional hospitals to support community health programs and care continuity. It participates in federal and state quality reporting initiatives and aligns with the Health Resources and Services Administration’s guidelines for community health centers. Mainline Health Systems also engages in workforce development through training programs and clinical education placements in collaboration with academic institutions.

For more information about steps you can take to possibly reduce the chances harm arising from a data breach, please review the following article: What are some steps you can take if you've been the victim of a data breach?

If you believe you are a victim of the Mainline Health Systems data breach, and if you would like to volunteer to serve as a class representative in a class action lawsuit regarding this data breach, please submit your information via the form on this webpage. This website is not associated with nor authorized by Mainline Health Systems or any affiliated companies. If you have received any other data breach notifications, you may to review Abington Cole + Ellery's current list of data breach investigations.