Established in 1901, Walgreen Co. is a chain of drugstores involved in the business of pharmacy, providing health plans and health care solutions. The company operates more than 7,600 drugstores in the United States, District of Columbia and Puerto Rico. It caters to approximately 6 million customers providing multichannel access to consumer goods, pharmacy/health and wellness services. The company caters to various sectors, such as retail, specialty, infusion, medical facility and mail service as well as pharmacy benefit solutions and respiratory services. In 2010, Fast Company ranked Walgreen Co. among the top 10 companies in health care.