This case study focuses on the ambulance billing service provided by expEDIum Medical Billing for Dominion, a Texas-based EMS agency. Dominion, which operates both emergency and non-emergency medical transport, faced significant challenges with their previous billing service, including dissatisfaction with revenue collection and lack of communication. They sought a new billing partner that would not only improve their revenue but also provide better access to data and analytics. After evaluating several options, Dominion chose expEDIum, which facilitated a smooth transition from their former billing provider. Following the switch, Dominion experienced an increase in collections, processing over 1500 claims with a high payment rate within a short timeframe. The services offered by expEDIum included patient demographics entry, coding, charge entry, secondary claims creation, and follow-up with payers, all aimed at enhancing the efficiency of the billing process.