Married Women Gained Most From Obamacare's Medicaid Expansion: Study October 25, 2019 Jim Stimpson, PhD, a professor in the Dornsife School of Public Health, was quoted in an Oct. 23 U.S. News and World Report article about a study he led showing that married people, especially women, benefited more than singles after the Affordable Care Act (ACA) expanded Medicaid insurance coverage in the United States. View story