Final answer:
HMOs stress preventative healthcare by encouraging regular health check-ups and screenings, using a fixed payment model that motivates providers to maintain patient health and prevent future complications.
Step-by-step explanation:
Health Maintenance Organizations (HMOs) emphasize preventative care by providing incentives for regular check-ups and screenings. Unlike traditional fee-for-service healthcare systems, where providers are paid for each service rendered, HMOs operate on a fixed payment model per person. This structure motivates healthcare providers to offer preventative care to avoid future health complications and higher costs. Since the fixed amount does not change with the quantity of services provided, HMOs may require preauthorization for services to manage costs further and ensure necessary care management.