Consenting practices will be randomly assigned to one of three treatment groups for approximately @ to @ months : ( a ) control group ( usual care ) ; ( b ) Intervention @ ( which tests improvements that could be made within the current funding model , facilitated through the use of an online chronic disease management network ) ; or ( c ) Intervention @ ( which includes the same components as Intervention @ , as well as altered funding to support voluntary patient registration with their practice , incentive payments and a care facilitator ) .