Abstract: A computer implemented method of identifying individuals having a predicted susceptibility and/or level of risk to repeated visits to a medical facility within a defined time period following an initial visit is provided. The method includes accessing an evaluation data store of historical patient data representing clinical history of each patient in the patient population. A risk score is calculated for each patient. The risk score based on a computation created from a modeling data store including a first data set comprising a history of medical facility visits accessed from a health information exchange. In the modeling data store, each visit is characterized by a set of factors, and the risk factor is calculated based on a subset of factors computationally selected based on a likelihood of each factor selected producing a medical facility visit. The risk factor can then be used in a number of different analyses.