- Linguistics Program, USC
- American Pragmatics Association, Secretary-Treasurer (AMPRA)
- Center for Bioethics, Director
- Law and Philosophy Initiative, Director
- The Ann Johnson Institute for Science, Technology and Society, Co-Director
- Integrating Values Into Evidence-Based Medicine (INVITE)
- The Consortium for Socially Relevant Philosophy of/in Science and Engineering (SRPoiSE)