Hahn Pediatric Group provides pediatric health care for children and their families. Han Pediatric Group is located the Advocate Medical Campus Southwest in Tinely Park, Illinois. Dr. Holly Russell, M.D. and Dr. Gene Denning D.O. To schedule an appointment call the office at 708-478-7800 or go to http://hpgkids.com/appoint.htm to fill out an appointment request form. The office will contact you within two business days.