Before Surgery Okay, so you're ready to take the next step Here's what you'll need to do over the following months: Attend a seminar. If you are at least 100 pounds overweight, have a body mass index of 40 or more, or a body mass index of 35 or more and are experiencing obesity-related health conditions, such as high blood pressure or diabetes call (585) 341-0366 to enroll in our next seminar. Schedule a consultation with one of our surgeons. Undergo a psychological evaluation to help you prepare for the adjustment to your new way of life. Have a consultation with our nutritionist. Obtain approval from your insurance company. Schedule an abdominal ultrasound to check for gallstones (if you have your gallbladder). Prepare for surgery. Follow our pre-admission procedures.