From a strictly technical standpoint, establishing a data-sharing connection between Paramount, a health insurance company and its primary care physician practices could have been executed in a short period of time. The real challenge of interoperability, however, was determining the right data to share—an arduous task that required not just technical expertise but considerable input from subject matter experts. In this case, investing the time to get it right was the difference between generating yet another unused data report and designing a game-changing population health strategy.