There are some things you don't Google and a plastic surgeons is in the top 5.
I don't know of any in Illinois but if you don't mind running over to Indiana there is a really good one!
turklemd.com/
She did a great job on one of the DS patient on Obesity Help,
OH Photo - 1 year after extended tummy tuck
They also have a list that you can research and see comments left by other patients,
ObesityHelp - Gastric Bypass, LAP-BANDŽ System, DS and Other Surgical and Non-Surgical Weight Loss Options., right under the Search box
But definitely ask around and see who others have used and make sure they are accredited, certified, etc. Do you homework before choosing one and don't go cheap, you pay for what you get!
Just my opinion