The Change Package is a tool used to support practice transformation by serving as an evidence- and experience-based guide for both the program team and the participating practices. Based on the evidence and best practices around team-based care (TBC), this change package draws on the work of “The Primary Care Team: Learning from Effective Ambulatory Practices” (LEAP), the Institute of Medicine, and the CO TBC Initiative’s faculty previous experience supporting TBC through patient centered medical home and chronic care model initiatives.