1. In a managed care plan that uses a gatekeeper, the primary care physician:

Coordinates care and authorizes referrals to specialists

In a gatekeeper model, the primary care physician coordinates care and must authorize referrals to specialists.

2. Under a capitation arrangement, a provider is paid:

A fixed amount per member per period regardless of services used

Capitation pays the provider a set amount per enrolled member per period, regardless of the volume of services used.

3. A point-of-service (POS) plan combines features of:

An HMO and a PPO, with the choice made at the time of service

A POS plan blends HMO and PPO features, letting the member decide in-network or out-of-network care at the point of service.

4. Many medical plans cover preventive services such as immunizations:

Often with little or no cost sharing

Preventive services such as immunizations and screenings are commonly covered with little or no cost sharing; specifics vary by plan.