Mark L. Graber, MD, FACP is Professor Emeritus of Medicine at Stony Brook University, NY and the Founder and President Emeritus of the Society to Improve Diagnosis in Medicine. Dr Graber is a national leader in the field of patient safety who helped Ilene Corina originate Patient Safety Awareness Week in 2002, an event now recognized internationally. In 2014 he received the John M Eisenberg Award, the nation’s top honor in patient safety and quality. He is a pioneer in efforts to address diagnostic errors in medicine. In 2008 he originated the Diagnostic Error in Medicine conference series, in 2011 he founded the Society to Improve Diagnosis in Medicine (www.improvediagnosis.org), and in 2014 he launched a new journal, DIAGNOSIS, devoted to improving the quality and safety of diagnosis, and reducing diagnostic error.