This essay provides a detailed comparison of three major healthcare delivery systems in the United States: Medicare, Medicaid, and private health insurance. The essay begins with an introduction to the US healthcare system, highlighting the absence of universal coverage and the rising costs of medical care, while also mentioning the Patient Protection and Affordable Care Act (ACA). The paper then delves into descriptions of Medicare, which provides health insurance to older adults and those with disabilities; Medicaid, which serves low-income individuals, children, and people with disabilities; and private health insurance, available through individuals or group plans. The essay discusses the advantages, disadvantages, and philosophies of each system, citing relevant statistics and changes in the healthcare landscape. The essay also examines the impact of the ACA and other factors on the coverage and enrollment in each system, concluding with a call for universal healthcare coverage to improve accessibility to healthcare services.