John S Clark1. 1. John S. Clark, Pharm.D., M.S., BCPS, FASHP, is Director of Pharmacy Services and Director of Pharmacy Residency Programs, University of Michigan Hospitals and Health Centers, Ann Arbor, and Clinical Assistant Professor, University of Michigan College of Pharmacy, Ann Arbor; at the time of writing, he was Chair, Commission on Credentialing, American Society of Health-System Pharmacists (ASHP), Bethesda, MD (johnclar@med.umich.edu).