No. The only Dr. concerned with my weight is my PCP and he is the one pushing surgery. My Endocrinologist pretty much told me that it's nearly impossible to lose weight taking as much insulin as I take and that's that. However, if I don't lose weight I'll never stop taking the insulin. I saw a dietician who was pushing the American Diabetes Association plan, which is basically eat next to nothing and be hungry all the time. I say that with tongue slightly in cheek, but that's what it amounts to. I can do that for 2-3 days and then I wind up eating everything in sight.
You gotta tough out the hunger pains part. That's really the key to permanent weight loss is shrinking the appetite, the hard part is your stomach doesn't want to shrink so when it's in the process of shrinking you'll be miserable. When I put myself on a weight loss regimen a couple years ago week 3 was when the stomach shrank and it SUCKED, I was hungry every waking minute of every day, but the good news is that once the shrink is done it really stops being a diet. After that I could eat until satisfied for every meal and the weight loss perpetuated itself. Still gotta keep an eye on the intake because once you've gotten over weight you know your instincts can't be fully trusted, but once you lose weight the hard (smart, fairly permanent) way you develop a good reason to not gain it back and all the life skills necessary to keep it off.
You can try looking up these guys http://www.tops.org/ I've got a friend with great success from them (TOPS stands for Take Off Pounds Sensibly). It's pretty much eat less excercise more (the smart way to lose weight) with a support group. They also have a sister organization (Keep Off Pounds Sensibly) for once you achieve your goal and want to maintain.
Gadget diets can give you big results but without the lifestyle change (which most gadget diets are seeking to avoid) they'll never give permanent results.
Have you consulted a nutritionist? Not a dietician but nutritionist.
I would think with your history, you should consult with a nutritionist with experience working with people with similar conditions (kidney, diabetes, cancer).