Walmart is opening its first 10,000 square-foot “Walmart Health” center that features an array of primary medical services, dental care, and behavioral health services as part of a new model expected to eventually be replicated in other markets. The first such “Walmart Health” brand center opened Friday in Dallas, Georgia, as a health facility offering more services than the 19 “Care Clinics” Walmart has already operated elsewhere in Georgia, South Carolina and Texas.