Mark T. Hughes, MD, MA, is Assistant Professor of Medicine in the Division of General Internal Medicine and a core faculty member of the Berman Institute of Bioethics at the Johns Hopkins University School of Medicine. Dr. Hughes is a clinician-educator, seeing patient in both internal medicine and palliative care. He is co-chair ot the Johns Hopkins Hospital Ethics Committee and Consultation Service. Since 2002, he has been the director of a mandatory course on research ethics for all faculty principal investigators and fellows conducting human-subjects research in the School of Medicine. In addition, he teaches clinical skills, clinical ethics, and research ethics to medical students. He works with colleagues in the Program on Ethics in Clinical Practice to design, implement, deliver, and evaluate ethics curricula in a number of Hopkins residency programs. He is co-developer and associate editor of the Physician Education and Assessment Center, an Internet-based curriculum utilized by medical residency programs across the nation. He is co-editor of the book Curriculum Development for Medical Education: A Six-Step Approach, soon to be published in its third edition.