1. Associate professor in the Bloomberg School of Public Health's Department of Health Policy & Management and core faculty at the Berman Institute of Bioethics at Johns Hopkins University
2. Associate dean for human research protection and director of the Human Research Protection Program at Johns Hopkins University School of Medicine
3. Policy analyst with the Duke Margolis Institute for Health Policy
4. Research scientist at the Berman Institute of Bioethics
5. Deputy director for medicine and Harvey M. Meyerhoff Professor of Bioethics and Medicine at the Berman Institute of Bioethics at Johns Hopkins University