GBY and gallbladder removal at same time?

If anyone has Dr. Glas**** in Cedar Falls, as well as Medical Associates HMO insurance, two questions . . .  1. Does his office do gallbladder removal at the same time of the GBY, and, 2. does insurance pay for it? I will of course go to the sources to check this out for sure, but just wondered for now as I just learned I had gallstones during my diagnostic testing.