ps He must be a great doctor to have as a diabetic! (probably as an anything.)
I know they have to say that about if you have a medical condition (including diabetes) that your fasting should be medically supervised. But my own GPs - both here in the subarctic, and at home in the subtropics - would go nuts if I contacted them every time I do a fast! Even my diabetes nurse would start to get agitated.
Just between us (as I know it MUST be said for safety reasons - to be medically supervised) - it is really only necessary the first time you do it. I would say. Or it is a long one beyond 5 days. Or, you are on medication. But why if you aren't on medication? I was medically supervised when I did my first 4-5 day water only fast, then followed it with a Very Low Calorie Diet for two months. It was nothing like in the wonderful docos like Supersize/Superfat/Superjuice/SuperMichaelMosley/Super Duper Me - you know - where they get all sorts of wonderful tests and graphs and the doctors have lovely seering conversations with the patient/doco maker! (I love those docos!) No way! I think most of us in socialised medicine countries have to insist even on blood tests in such situations. Even then they say no, I have read in the forum.
My diabetes nurse whipped out a measuring tape in my first fasting/dieting supervision appointment and measured my waist - I guess to make sure I had some fat on the gut to work through (i did, and still do). And I was the one who had to beg for the HBAIcs so I could keep a track of the improvement. But that was it. The rest was just checking and adjusting calorie intake for conditions. I've had NOTHING like that basic level for fasts - as it is out of my doctors' realm of experience. I believe the fasting website I used online, recommended seeing a doctor familiar and experienced with fasting. Probably do-able in hugely populated US of A - but I live in two relatively lowly populated countries (9 million, and 4.5 million) - chance would be a fine thing! My long-winded way of saying - getting medical supervision for fasting is probably only called for if you are medication of any kind, and need to check for hypos, and adjust the medication for diabetes. The doctors and diabetes nurses (at least in my neck of the woods) will probably just look at you blankly if you asked them to supervise you for a 5-day fast.