In an effort to better understand and facilitate discussions about the challenges and opportunities related to identifying and implementing quality measures for accountability purposes in community-based serious illness care, the National Academies of Sciences, Engineering, and Medicine held a public workshop on April 17, 2018, in Washington, DC. Workshop participants explored the current state of quality measurement for people with serious illness, their families, and caregivers, with the aim of identifying next steps toward effectively implementing measures to drive improvement in the quality of community-based care for those facing serious illness. This publication summarizes the presentations and discussions from the workshop.