The project represents a public/private partnership with the goal of consolidating access to longitudinal data on health services financed by public and private payers, to help facilitate CER. Under the current implementation contract, use of the MPCD will be limited to CER applications. Once the MPCD enters its operation and maintenance phase, it is envisioned that the database will continue to be used primarily for CER-related inquires; however, other uses may be considered subject to the approval of data contributors. Inclusion of data from multiple sources should allow for adequate coverage of priority patient populations, less common medical conditions and health care interventions, and geographic areas.