Express Scripts Holding Company is an American Fortune 100 company. Headquartered in St. Louis, Missouri, Express Scripts provides integrated pharmacy benefit management services including network-pharmacy claims processing; home delivery pharmacy services; specialty pharmacy benefit management, through its subsidiary Accredo; benefit-design consultation; drug-utilization review; formulary management; and medical and drug data analysis services to manage drug plans for health plans, self-insured employers and government agencies (both as administrator of employee benefits and public assistance programs).