Katherine Hempstead is a senior policy adviser at the Robert Wood Johnson Foundation. She works on healthcare issues, mostly those related to health insurance, costs, and access to care. In her work in the policy unit, she seeks to inform policy discussions at the federal and state level by making data and analyses widely available. She is particularly interested making new sources of data that have the potential to inform policy available to researchers and the public sector.
Katherine joined the Foundation in 2011. Prior to that, she was the director of the Center for Health Statistics in the New Jersey Department of Health, where she focused on analysis and dissemination of major data sets including vital statistics, hospital discharge data, and the Behavioral Risk Factor Surveillance System. In this role she became involved in a number of CDC surveillance projects, and led New Jersey’s participation in the National Violent Death Reporting System. During this time, she also worked at New Jersey’s Office of the Attorney General, where she led the internal evaluation of several criminal justice initiatives and participated in other analytical projects. Katherine also served on the faculty at the Rutgers Center for State Health Policy, where she is still a visitor.
Katherine received a PhD in Demography and History from the University of Pennsylvania, where she also received a bachelor’s degree in history and economics. She was a post-doctoral fellow at Princeton University’s Office of Population Research at the Woodrow Wilson School. Katherine has taught history, public policy, and biostatistics in various settings. She frequently speaks and writes about health insurance and other healthcare topics. She is also an active researcher, and has authored numerous articles in the peer reviewed literature.
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Marketplace Pulse: How is Competition Evolving in the Marketplace?
Between 2019 and 2021, plan participation in the ACA marketplace increased dramatically, while enrollment growth was modest. In 2022, that started to change. In 2023, that trend is more pronounced. An updated map shows changes in participation at the county level.