Dr. S Jercinovic started her medical career at age 15.  It was at that time(and place), customary to orient young people to a desired career early in life.  She graduated as an RN at the Nursing School of Karlovac at the age of 19.  She thereafter went on to pursue her studies of Medicine at the University of Rijeka in Croatia.  She received her Medical Degree in 1980.  Dr. Jercinovic continued her training in Chicago.  As a pediatrics resident at Rush Presbyterian St. Luke's, she had the opportunity to work at Mt. Sinai, and Christ Hospitals, (Current Hope Children's Hospital.)

After completion of pediatrics training, Dr. Jercinovic worked as Pediatric Emergency Room Physician and Clinical Instructor of Pediatric Emergency medicine at the University of Chicago Wylers Children's Hospital. 
In Joliet Dr. Jercinovic was Medical Director and founder of Nursery and pediatric inpatient service at Silver Cross Hospital.
Dr. Jercinovic established pediatric offices in Wilmington and Joliet, and in 1990 joined her husband Dr. Bruno Jercinovic in the current office, known as "Dr. J. Pediatrics."

Dr. Jercinovic is licensed by the State of Illinois.  She is a Fellow of the American Academy of Pediatrics, member of the American Medical Association, Illinois State Medical Society, and Will-Grundy County Medical Society.   Dr. Jercinovicis a member of the staff at Provena St. Joseph Medical Center, and Silver Cross Hospital.

Dr. Jercinovic has four sons, aged 29, 21, 16, and 13