Magellan Health is one of the nation's largest and independent behavioral health care companies. Throughout the country, they provide health plan carriers, such as those in Mississippi; behavioral and mental health programs, and employee assistance programs. When you have health insurance, you will often have a network of service providers, from which you can select services. Behavioral health services, such as those for the treatment of a drug or alcohol addiction, are often covered by some insurance policies. Substance abuse and addiction do affect many of the communities throughout the state of Mississippi, and the people living within them. When you are choosing a drug or alcohol treatment program, you should be speaking with your insurance provider, and finding out what type of coverage you have, and how it can be used in a drug rehab center. Healthcare management groups are common throughout the country, and this is usually how insurance providers give access to healthcare services for their clients.