A new study from the Colorado Hospital Association (CHA) shows the impact of Medicaid expansion on hospital volumes in the 26 states that chose to expand Medicaid eligibility under an option offered through the Affordable Care Act. The study shows that the Medicaid proportion of patient volume at hospitals in states that expanded Medicaid increased substantially in the first quarter of 2014. At the same time, the proportion of self-pay and overall charity care declined in expansion-state hospitals. You can listen to the article on Colorado Public Radio here, and read the study from CHA here.