To become a Pediatrician, you have to complete your bachelor and master degree. In India, most of the universities offer undergraduate & postgraduate level courses in the field of pediatrics. You have to pursue MBBS + MD degree in Pediatrics to become a Pediatrician.

Specializations of pediatric fields are:

Child abuse pediatrics
Child neurology
Pediatric critical care
Neonatology
Pediatric oncology
Adolescent medicine
Pediatric cardiology
Pediatric endocrinology
Pediatric gastroenterology

Hope this helps!!!