A simple surgery might do the trick. It’s been well documented that an after effect of the gastric bypass was diabetes either disappeared or was severely mitigated. I would look for a doctor that is familiar with this.
http://www.cbsnews.com/stories/2008/04/17/60minutes/main4023451.shtml
There is another surgery that will reverse Type 2 Diabetes 95% of the time called Duodenal Switch.
There is a 2 part surgery for weight loss but you can also have just 1 part done for diabetes. From what I understand they are doing trials in Europe with this but there are not many surgeons in the US who do this.
I had the 2 part surgery for weight loss 4 years ago and lost 130 lbs. My surgeon was Gilberto Ungson and it was performed in Hermosillo, MX. A beautiful private hospital with wonderful care. The 2 part surgery cost me $13000 including airfare and hotel. I’m not sure what it would be now.
If I were diabetic, I would do this in a heartbeat. Your mileage may vary.