Multiplan is not an insurance provider but is a leased network that is used by some insurance carriers in South Dakota. A preferred provider organization will be an extensive list of medical service providers, which those who are insured can choose from. Within this list, it will include behavioral health programs and substance abuse treatment services to help people who are struggling with drug addiction. Even casual drug use can lead to serious drug problems, and when you do not get the help, you need, the abuse problem will become worse. Substance abuse in the state of South Dakota does impact communities and the people living within them. Many of the residents of South Dakota will have some type of health insurance, whether this is government-sponsored or private. When you have health insurance, you can choose from a list of providers within the network provider list your insurance company works with, and this could be Multiplan.