Practice News

Face Masking
Starting May 1st, we are no longer requiring face masks in office. 
Patients can head directly up to our normal waiting room for their appointment.
There will be masks available at the front desk if you would like to wear one.
Please let us know if you prefer that your provider wear a mask during your child's visit.
Thank you and cannot wait to see all of your smiles next week!

Time to schedule your physicals!
Our summer schedules are open and it's never too early to schedule those school/sport physicals!
Please call our office at your earliest convenience for best availability with your provider.

Newborn Care and Transfer Care
Dr. Persak is now open to new patients transferring in from other providers.
We continue to accept newborn babies into our practice.
Please see our New Patients tab for more details.

Welcome to Our Practice

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.


Our providers are all board certified in pediatrics and our doctors are Fellows of the American Academy of Pediatrics. Our doctors are on staff at Edward Hospital in Naperville and are affiliated with Ann & Robert H. Lurie Children’s Hospital of Chicago. Our team:

  • Gus Rousonelos MD
  • Erin Shanks MD
  • Karolyn Law MD
  • Ushma Patel MD
  • Pamela Persak MD
  • Larissa Schulze CPNP
  • Tiffany Kozlick CPNP

Hours of Operation

Our Regular Schedule


7:30 AM-7:30 PM


7:30 AM-6:00 PM


7:30 AM-7:30 PM


7:30 AM-7:30 PM


7:30 AM-5:45 PM


8:00 AM until last scheduled appointment



Our Location

Find us on the map