The Case for Claims Data Aggregation In this new environment of paying for value rather than fee for service, Comprehensive Primary Care initiative (CPC) being a premier example, everything depends on the measurement of value. If we get it wrong the whole movement falters. In the fee for service world much has been done to define “services”, no less important is a standard definition and agreement on what is “value”. This measurement of value to a reasonable degree has to be accurate, above reproach and comprehensive. It cannot represent a piece of performance or ignore the context of related metrics if it is to provide an overall picture of a practice. It must represent a significant sample size of the practice to avoid the perception that a blip in performance is representative of the overall performance. For as long as health plans have existed there has been an ongoing laborious debate between providers and plans as to whose data is accurate, what it represents and how it should impact payment. Health plans have been largely blind to quality outcomes and physicians have been largely blind to cost outcomes. In this day of value both need to be present and accounted for. The accounting cannot legitimately be done by either side. It requires a neutral source of truth for us to progress beyond the “head butting” that takes up so much of our time and effort. Not only can neither side do it on its own, neither side should pay for it alone. Whoever pays for the aggregation of data will have control of the process to a lesser or greater degree regardless of attempts to build-in transparency. If we are to truly have a neutral space it requires shared financing. Joint ownership provides for transparency with regard to vendor oversight, understanding methodology, access to data, avoiding suspicion of a “black box”, and providing a good prototype for future expansion. 1. Value to health plan: In the absence of a data aggregator most if not all of the payers have developed their own methodology for shared savings using the agreed upon metrics but collecting data only on their own membership. This has several disadvantages which could be addressed with a data aggregation approach: a. The inability to have sufficient volume with individual practices thus requiring the empanelment of practices. This approach defaults to evaluating the value of systems or groups of independent practices. It does not credibly evaluate the value at the practice level which is the new functional unit of team-based care. Aggregating the results from as few as three physicians in a practice across a majority of their patients approaches an actuarially sound number for the purposes of evaluating cost outcomes. b. If payers want to know if this new payment for value is valid it will require a robust data base to prove the concept. Even Medicare Fee for Service would by and large not have adequate membership in an individual practice to demonstrate conclusively whether the new pay for value methodology actually reduced cost and/or increased quality and patient satisfaction. c. While we are starting with the measurement of cost and utilization in our data aggregation strategy, eventually the plans would benefit most from a comprehensive view of quality