Schumacher, Mark A.: - Mark A. Schumacher, MD, PhD, is professor and chief of the division of pain medicine in the department of anesthesia and perioperative care at the University of California, San Francisco (UCSF). Schumacher is director of the UCSF Pain and Addiction Research Center; recently served on the National Academies of Science, Engineering, and Medicine Committee; and coauthored a report on the opioid epidemic. Throughout his career, he has sought ways to communicate the science and practice of pain medicine, including previously directing an NIH Center of Excellence in Pain Education at UCSF.