Magnolia Rehab and Longterm Care. Dietary Manager. Location. Magnolia Healthcare & Rehabilitation Center. 1410 Trotwood Avenue, Columbia TN 38401. General Description & Responsibilities : The Dietary Manager is responsible for oversight of all kitchen operations to include, meal service, quality assurance, audit & staff observation, sanitation rounds, kitchen onboarding and training, food ordering and inventory. This position requires some type o...