An algorithmic method for generating a medical utilization profile for a patient to facilitate decision making in the medical risk analyses, wherein the algorithmic method is comprised of four key components: (1) key independent variables recognized including medical data sources; (2) an ontology based process to organize these variables; (3) rules (probability distributions etc.) that can be used to draw correlative information from the given data and its ontological organization; and (4) usage of reasoning engine to process the gathered information and draw inferences.