Petronilo Costa. His primary practice is as a Preventive Medicine: Undersea and Hyperbaric Medicine, also practicing as a Pediatrics, a Pediatrics: Adolescent Medicine, a Pediatrics: Developmental - Behavioral Pediatrics, a Pediatrics: Neurodevelopmental Disabilities, a Psychiatry & Neurology: Child & Adolescent Psychiatry, and a Psychiatry & Neurology: Psychiatry.