Since 1987, we have been committed to bringing you
the very best value in pediatric health care.


The goal of ABC Pediatrics is to provide quality health care to our patients. We serve as advocates for all children, newborn through adulthood. We strongly believe in spending ample time educating families about well childcare, pediatric illness, behavioral and school problems.


Dr. Gus Rousonelos started practicing pediatrics in Naperville in 1987. He established ABC Pediatrics, Ltd. in 1993. Dr. Erin Shanks joined the practice in 2000 with Dr. Law following in 2003. Dr. Ushma Patel came to ABC in 2005 and our newest addition to the ABC staff, Dr. Pamela Persak joined in 2008. Our doctors are all board certified in pediatrics and Fellows of the American Academy of Pediatrics. They are affiliated with Ann & Robert H. Lurie Children's Hospital of Chicago and on staff at Edward Hospital in Naperville.


  • Prenatal consultations
  • Evaluation of normal and sick newborns at Edward Hospital
  • Promote breast-feeding and management of common breastfeeding problems
  • Teach and provide guidance in parenting skills
  • Monitor physical growth and development as well as psychosocial parameters throughout childhood and early adulthood
  • Provide handouts and counseling with age- specific information about safety, development and nutrition
  • Preventive medicine
  • Educate families concerning school problems, developmental illnesses, and family interactions
  • Diagnose and manage a full range of specific illnesses from otitis media and complicated asthma to attention deficit disorders
  • Provide Saturday and evening hours for our patients' convenience