Data from the Health Care Pricing Project show variations in hospital inpatient prices, and how market power affects what hospitals charge patients in 188 hospital referral regions (HRRs) nationwide. In particular, see the data on hospital inpatient prices which shows that prices in most expensive region are 400 times higher than they are in the least-expensive region. Data on market power show that when a hospital has a monopoly in a market, its prices are 15.3 percent higher than they are in areas with four or more hospitals. See also the presentation slides and the pricing graphs for 118 HRRs.
