Prepaid Health Plans: There are plans governed by HMOs (Health Maintenance Organizations). Basically, they were designed to make sure that all medical costs are necessary, and that in order to prevent unnecessary medical costs, preventive medicine is key.
Basically, before joining an HMO, you must select your primary care physician from a list that the HMO provides to you. In addition, you must pay copays (usually small) for doctor visits or prescriptions. These are low because they're designed to make people have incentives to receive preventive care.
Government-Sponsored Health Care Programs: The most popular is Medicare, which provides medical care to persons over the age of 65, or for those who are permanently disabled. For more information regarding these plans, you should contact your local security administration office.