A data management system for managing services rendered within a network of one or more medical service entities and one or more insurance entities includes a provider interface, a payment interface, and a processing engine. The provider interface receives information about one or more medical services in a first format. The processing engine generates an invoice based on the information about the one or more medical services and determines that the invoice is to be paid in a plurality of installments. The payment interface receives each of the plurality of installments from one or more payment services. The provider interface further generates, in a second format, a transaction for each of the plurality of installments and sends said transactions to the one or more medical service entities. The provider interface then transmits information indicating completion of the installments to the one or more medical service entities in the second format.