HCCI's data users and staff use our multi-payer, longitudinal commercial claims dataset to study some of the most pressing issues in the U.S. health care system. Here we highlight some recent research using HCCI data: HCCI 2019 Healthy Marketplace Index Using nearly 4.2 billion commercial claims from 2015 to 2019, HCCI tracks drivers of health care spending across 185 U.S. cities throug...