This brings up a big issue with this type of gamification. If someone prescribes a solution which has a superficial short term effect (think painkillers, etc), they may be rewarded in 'points' (e.g. money) because the patient is able to see a direct effect. This would reward treating symptoms rather than the underlying problem and could result in sub-optimal treatment. Unless this website is planning on adjusting rewards based on long term effects on the order of years, I'm not sure how this would be avoided.

EDIT: etc, as in et cetera