why and why not?

whey do some hospital not offer gastric bypass or the band, but the doctors work there?

I don't know but if you are looking for a good doctor and hospital for RNY or Lapband, Froedtert has an ecellent plan and exceptional staff and doctors. My surgery was 1/26/10 and the only thing that would have made me happier is if I had known sooner that my insurance covered it, but where ever you go... choose the best surgeon you can, like those at Froedtert.. Sucess depends on it.

Good Luck!