I do not know of any. But if you are a low BMI my guess is that you will be self pay. Therefore I would suggest you look into going to Denver to Dr. Kirshenbaum (I think that's the spelling) there's a whole thread here dedicated to him and his website is
www.lapbandrockies.com
Another option is to go to Mexico, you'll find lots of threads about going to Mexico as well.
Or there is a Dr. Mark Pleatman in the West Bloomfield area who offers banding for $12450. I do not know what his BMI criteria is. His address is
www.laparoscopy.com
I suspect at a very low BMI you might have to go to Mexico.
I wish you luck and look forward to hearing more about how you are coming along.