A family of four has social security. Can a person buy a new rural cooperative medical system without social security?

A family of four has social security. Without social security, residents' medical insurance can be purchased separately. At present, there is no new rural cooperative medical system and urban medical insurance, which are collectively referred to as residents' medical insurance. They need to bring their ID cards to the social security office of their neighborhood office to open an account. After opening an account, you can handle the payment of residents' medical insurance. Remember to participate in the insurance according to the centralized payment time in various places.