Hi ben, I love the idea, currently you are missing neurologist.
I'd be really interested to speaking with you about something I'm working on at the moment http://benlowery.co.uk/medical_diary/the_idea.html
Briefly, it's a fully integrated 'MIS' (it's similar at least so that other techies/tech management understand what I mean) aimed entirely at patients and allowing them to better manage their own care, will be freely hosted and open source.
So far I've gotten a bunch of people and friends from various industries on-board (though I'm still the only developer, it kinda snowballed) but I've never done anything like this and (nosying around) it appears you have.