Dr. Severino was named senior vice president, Global Development and Corporate Chief Medical Officer in February 2012.

Dr. Severino joined Amgen in 2004 as senior director of Inflammation Early Development. Subsequently, he held the role of head of Amgen's Proof-of-Concept group within Medical Sciences, where he was responsible for leading a team of physician-scientists responsible for Amgen's late pre-clinical and early clinical programs across all therapeutic areas. In 2006, Dr. Severino assumed leadership of the Inflammation Therapeutic Area in Global Clinical Development, and in 2007 he was promoted to vice president, Global Development.

Prior to joining Amgen, Dr. Severino held positions of increasing responsibility at Merck Research Laboratories across a wide range of therapeutic areas including Vaccines/Infectious Diseases, Oncology, Diabetes/Metabolic Disorders and Neurosciences.

Dr. Severino received his Doctor of Medicine from The Johns Hopkins University and completed his postgraduate training in Internal Medicine and Infectious Diseases at Massachusetts General Hospital and Harvard Medical School.