I had no issues with the anesthesia, but with the billing office as others have stated. I received a bill 18 months after my sons surgery. When I called to encounter and complain about this, the lady on the phone didn't seem to care. She said they had just switched billing agencies 4 months ago, but from previous reviews, I can see this has been a problem for years. I told her this was unacceptable business practice. Again, she didn't really seem to care and told me that they are sending bills from 2013 and there is not limit on the time to send them!