To guide the measure development process and provide the perspectives of all stakeholders, we convened three meetings of a multistakeholder TAG. This group included 16 members representing expertise in clinical care, research, state and federal policy, consumers, managed behavioral health care, and quality measurement. The TAG met three times by teleconference through the course of the project. During the first teleconference, we asked TAG members to review proposed measure concepts, identify potential gaps in these concepts, assess measure development priorities, and recommend measures to be specified and tested. Measure specifications and the testing plan for the selected concepts were then reviewed during the second TAG meeting. The third meeting consisted of reviewing the preliminary results of the field and pilot-testing. In addition, the TAG evaluated and provided further feedback on the specifications and recommended measures for NQF submission. Appendix B lists the TAG members and includes material presented at each TAG meeting.