Hahn Pediatric Group Share: Physician Hahn Pediatric Group Visit Website 18210 S. La Grange Road #205 Tinley Park, IL 60487 (708) 478-7800 (708) 478-7870 (fax) www.hpgkids.com Rep Info Map Whom to Contact Dr. Gene Denning What's Nearby? Distance: 5 10 15 20 25 50 mi.