John Koski is a Managing Director and Co-heads the Healthcare Practice at Allen & Company. Dr. Koski focuses primarily on the healthcare services and healthcare information technology sectors. Prior to joining Allen in 2005, he had been a Resident in Orthopedic Surgery at the Hospital for Special Surgery in New York City. Previously, he was an Associate in the corporate development department at Amgen. John is a graduate of Harvard College where he received an A.B. in Biology, summa cum laude. He subsequently received an MD with honors from the Yale University School of Medicine and an MBA from Harvard Business School.