Tribal managed care entity would be the first of its kind in the nation. : There may be an issue with the delivery of your newspaper. This alert will expire at NaN. Click here for more info. .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... .......... After nearly two decades of preparation, a first-of-its-kind effort to establish a Navajo Nation-administered Medicaid program is nearing reality. Last month, the governing body of the sovereign nation unanimously passed legislation setting up the Navajo Managed Care Organization.