St. Tammany Parish Hospital Service District No. 1 – St. Tammany Health System – is governed by an eight-member Board of Commissioners, six appointed by the St. Tammany Parish Council to six-year staggered terms, one elected by the medical staff to a one-year term and one nonvoting member, the Parish President or designee. 

The St. Tammany Health System Board of Commissioners meets once a month and governs hospital operations.