Dr. Viola specializes in pediatric anesthesiology at Johns Hopkins All Children’s. He joined the hospital staff in 2020. He also is program director of the Johns Hopkins All Children's Pediatric Anesthesia fellowship program. Dr. Viola was previously a pediatric anesthesiologist at Nemours Children’s Hospital in Orlando. Before that, he served as vice chief of pediatric anesthesia in the Division of Anesthesia at Joe DiMaggio Children’s Hospital at Memorial Hospital in Hollywood, Florida.