major US health insurance

UnitedHealth Group is a diversified healthcare company and the largest health insurer in the United States by total premium volume. The company operates through two distinct business platforms: UnitedHealthcare, which provides health care coverage and benefits services, and Optum, which offers health services including pharmacy benefit management, data analytics, and direct clinical care. UnitedHealth Group leverages its massive scale and data capabilities to coordinate care, manage pharmacy costs, and provide health insurance to individuals, employers, and government programs like Medicare and Medicaid. By integrating insurance coverage with service delivery and advanced technology, the company aims to improve health system performance and patient outcomes. It is a member of the Dow Jones Industrial Average and consistently ranks among the top companies in the Fortune 500.