Donald Karcher, MD, FCAP is Professor and Immediate Past Chair, Department of Pathology, at the George Washington University Medical Center in Washington, DC. He received his MD degree from the Louisiana State University School of Medicine in New Orleans and completed residency training in anatomic and clinical pathology at the Brooke Army Medical Center at Fort Sam Houston (San Antonio), Texas. He then served as Director of Hematopathology at Walter Reed Army Medical Center in Washington, DC and subsequently at LSU Medical Center in New Orleans. From 1984 to the present, Dr. Karcher has been on the faculty in the Department of Pathology at the George Washington University Medical Center, rising through the ranks to become Chair of Pathology in 1999, a role in which he served for 20 years. He is Board-certified in Anatomic and Clinical Pathology and Hematopathology, and he continues to actively practice and teach hematopathology, flow cytometry, and laboratory administration at GW. Dr. Karcher is active in many national and international medical and pathology organizations. He currently serves as President-Elect of the College of American Pathologists (CAP), following service as chair of the CAP Council on Government and Professional Affairs and Council on Education and for many years as a member of the CAP Board of Governors and Executive Committee. For several years, Dr. Karcher has been a leader in the Association of Pathology Chairs (APC), the preeminent organization of academic pathology departments in the US and Canada, and served as APC President in 2014-2016.