Harvard Pilgrim

Does anyone have Harvard Pilgrim insurance? The only prereq that I am concerned about is the documentation of previous attempts to lose weight which may include Weight Watchers, Atkins, etc. I have done Weight Watchers online, I have done low carb off and on for years without any real success. My dietician, at my first appointment, made no mention of any concern about this and the program director told me not to worry, that is what the dietician was for. To compose that letter. I should also mention that my insurance does not require a set amount of nut visits. So, of course I am concerned. Thanks in advance!