Keep searching for a doctor willing to take your insurance. You will still be responsible for your portion that insurance does not cover. It's rare that a doctor will write off a balance because they themselves are not making any money off the surgery. Most public insurance companies only give the hospital what they think is fair payment and the doctor takes a loss when patients can't pay. You can ask a local church to help if you have multiple health issues requiring weight loss surgery. Keep in mind there are multiple visits to a doctor, psychological exams, ECG and nutrition classes one must complete before getting approved for the surgery.