CVS Health Corp, formerly known as CVS Caremark Corporation was incorporated in the State of Delaware. The Company is an integrated pharmacy health care provider in the United States. It has three segments: Pharmacy Services, Retail Pharmacy and Corporate. The pharmacy services segment provides pharmacy benefit management services to their clients consisting of employers, insurance companies, unions, government employee groups, managed care organizations ("MCOs") and other sponsors of health benefit plans and individuals throughout the United States. The Company operates a network of mail service specialty pharmacies. There specialty pharmacies were comprised of 11 specialty mail order pharmacies located throughout the United States that are used for delivery of medications to individuals with chronic or genetic diseases and disorders. The retail pharmacy segment included 7,660 retail drugstores, of which 7,603 operated a pharmacy, their online retail pharmacy websites, CVS.com and Onofre.com.br, 17 onsite pharmacy stores and retail health care clinics. There corporate segment provides management and administrative services to support the operations of the company. The corporate Segment consists of certain aspects of executive management, corporate relations, legal, compliance, human resources, corporate information technology and finance departments. Its customers include managed care organizations and government-funded health care commercial employers. It competes with other drugstore chains like Walgreens and Rite Aid, supermarkets, discount retailers (e.g., Wal-Mart and Target), independent pharmacies, restrictive pharmacy networks, membership clubs, Internet companies and retail health clinics, as well as other mail order pharmacies and PBMs. The Company's business is subject to federal and state laws and regulations that govern the purchase, sale and distribution of prescription drugs and related services, including administration and management of prescription drug benefits.