Billing Support Vendor Notifies 701K Patients About December 2023 Data Breach. Medusind, a Florida-based revenue cycle management vendor and practice management software provider, has recently started notifying individuals about a Medusind has notified 360,934 individuals that their protected health information was compromised in a December 2023 security incident. Data breaches have also recently been reported by Indiana University Health, Mid-Ohio Psychological Services, and Khalil Foundation (Khalil Center). Third-party company: Transform Studios.