A fee-for-service health plan allows you to see any provider -- doctors, hospitals, and so forth -- you want to see. Either the health plan pays the provider directly for the care you get, or it reimburses you for paying. You are still responsible for any deductibles or cost-sharing. A FFS plan tends to be more expensive than managed care plans, like an HMO or PPO. In part, that's because HMO or PPO plans contract with providers to take a discounted fee for certain services.