Types of HMO Insurance?

There are four types of HMO insurance. Staff model is where the doctors receive a wage and their office is in the building. Group model has the doctors not receiving a wage from the insurance, but they are part of a doctors group. Independent Practice Association is where a doctor has their own office and can see non-HMO people. The last type is Network Model where the insurance company will use a variety of doctors, from all of the different groups.