The Cobblestone Opco, LLC Data Breach: Reported Filing Facts

Cobblestone Opco, LLC appears to operate as a healthcare provider or medical management entity, given the naming convention common among clinical and facility-based organizations. Such companies typically collect and store highly sensitive personal data, including patient health records, diagnostic information, insurance details, and government-issued identification numbers required for billing and treatment purposes. This breach was officially reported to the Indiana Attorney General in 2025, confirming that the organization experienced a security incident involving the unauthorized access of its systems. If you received a data breach notification letter from Cobblestone Opco, LLC, it indicates that your personal or protected health information was likely contained within the compromised files. We recommend reviewing the letter carefully to understand what specific data elements were exposed and to follow the provided instructions regarding credit monitoring or identity theft protection services.

State: Indiana
Breach date: September 27, 2024
Reported: September 22, 2025

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

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