I'm in northern Illinois, about an hour north of Chicago. I've heard excellent things about the Wish Center and I'm pretty sure they have a location in Chicago. Dr. Iwanicki (sp?) at Wish is supposed to be very good, as are the 2 other docs that work with him. I'm hoping to get it done at the hospital up by me, Centegra's Bariatric Center, with Dr. Haydari, but if I wasn't going through him, I'd go through Wish.
As for insurance, it varies a lot from what I can tell. SOme cover it, some don't, some do only after you jump through a ton of hoops, ie be on a dr-supervised diet for up to a year, submit lots of extra tests, and do a bunch of appeals. Unfortunately, mine insurance won't cover it for me. My BMI is only 40 and I have no co-morbidities, so they won't consider it a medical neccessity. I also need to be enrolled in the ins plan for 2 years and I just started this past January. So, I'll be self-pay. :second: Call your insurance company and they should be able to tell you what you need to get it approved. Some are better than others. Good luck!