A computer system configured to extract and integrate health care data from a plurality of health care payors. The computer system includes a computer configured to communicate with payor computer systems from two or more payors. The computer is also configured to receive health care data of a type related to claims information. A staging database is in communication with the computer and configured to receive the claims information from each of the payor computer systems. The claims information is converted into a normalized format by a normalization system. A rules engine of the normalization system establishes the predefined format, predetermines how each of the plurality of health care data is to appear in its respective field, and remodels any of the health care data that is not expressed as predetermined by the normalized format into the normalized format. Normalized data expressing information having the same meaning will be expressed in the same format.