Mission Supporting the health and well being of the people in our community. About The Texoma Health Foundation is the only independent, nonprofit public health foundation serving Grayson, Fannin, Bryan, and Marshall Counties in North Texas and Southeastern Oklahoma. Company Overview The Foundation is governed by a fifteen member Board of Directors comprised of community leaders and a representative for Reba McEntire. In addition to overseeing multiple funds and endowments, THF awards grants to area nonprofits annually, as well as owns and operates Reba’s Ranch House.