CPATH, 2007 to present

FTM International, 1999 to present

International Academy for Sex Research, 1994 to present (elected)

Society for Teaching and Learning in Higher Education, 2000 to present

Society for the Scientific Study of Sexuality , 1991 to present

Board of Directors, 1998 to 2000

World Professional Association for Transgender Health , 1992 to present

Standards of Care Work Group, 2006 to present

Chair archives Committee, 2005 to present

Standards of Care Committee, 1999 to 2001

Archives Committee, 1999 to 2005