Market Intelligence Report |Executive Summary Of the estimated 1.5 million Medicaid consumers with an intellectual and developmental disability (I/DD), approximately 358,508 consumers with I/DD were enrolled in a managed long-term services and supports (MLTSS) program in 10 states. This represents approximately 2.1% of the total Medicaid population and 25.4% of the I/DD consumers enrolled in the Medicaid program. In the United States, there are 22 states operating 26 Medicaid managed long-term services and supports (MLTSS) programs. Of these, only ten states (i.e., Arizona, Arkansas, California, Iowa, Kansas, Michigan, North Carolina, Tennessee . . .