The United States spends nearly $8000 per person on health care annually. Even for a wealthy country, this amount is substantially more than would be expected and 2.5 times the average spent by other Organization for Economic Cooperation and Development (OECD) countries. The growth rate of health care spending in the United States has also far outpaced that in all other high-income OECD countries since 1970, even accounting for population growth. This increase in health spending threatens to squeeze out critical investments in education and infrastructure. To successfully develop and implement policies that effectively address both the level and growth of U.S. health care costs, it is critical to first understand cost drivers. Many health policy and economics scholars have contributed to an ongoing debate on whether to blame high prices or high utilization of services for escalating health care spending in the United States. This paper argues that price and volume both contribute to high and increasing health care costs, along with high administrative costs, supply issues, and the fee-for-service payment system. Initial strategies to contain costs might include implementation and expansion of bundled payment systems and competitive bidding.