A. Pediatricians specialize in treating particular age groups or medical issues. These are some examples of pediatric subspecialties: - Adolescent medicine specialists - Critical care pediatricians - Developmental behavioral pediatricians - Pediatric oncologists - Pediatric cardiologists - Pediatric pulmonologists - Pediatric nephrologists - Pediatric rheumatologists - Pediatric neurologists - Neonatal-perinatal pediatricians - Pediatric gastroenterologists - Pediatric endocrinologists