A computer system includes a data storage module. The data storage module receives, stores, and provides access to data related to payment requests submitted to an insurance company by service providers. The data storage module is coupled to a computer processor. Also coupled to the computer processor are a program memory, an input device and an output device. The input device is used to input information to identify a first service provider. The display device is used to display data about other service providers who are associated with the same insurance claims as the first service provider. The data displayed about the other service providers includes taxpayer identification numbers (TINs).