Rosemarie Day, MPP founded Day Health Strategies in 2010 to focus on implementing national health reform. Building on that foundation, she and her team now work with organizations that want to transform how they deliver or finance care, with a focus on equity, patient-centeredness, and long-term sustainability. In addition to leading Day Health Strategies, Rosemarie provides advisory services to CEOs and boards, helping leaders navigate disruption, strengthen governance, and drive meaningful change.

Rosemarie has over 30 years of experience across the public, private, and non-profit sectors, including 16 years in senior roles in state government. Most notably, she served as the founding Deputy Director & Chief Operating Officer of the Massachusetts Health Connector, where she helped launch the first state-run health insurance exchange in the U.S. and brought the uninsured rate down to 2%—a model for national reform. She also served as Chief Operating Officer for the Massachusetts Medicaid program, a $6 billion agency covering more than 1 million members, and as Chief of Staff to the Dean of Harvard Kennedy School.

An accomplished speaker and nationally recognized expert in health reform, Rosemarie is the author of Marching Toward Coverage: How Women Can Lead the Fight for Universal Healthcare (Beacon Press, 2020). She has advised leading firms such as McKinsey and Health Management Associates, held a faculty appointment at Northeastern’s D’Amore-McKim School of Business, and guest lectured at Harvard, MIT, Stanford, and more. She recently chaired the Board of Trustees for Merrimack Health, a hospital system where she has guided a transformative regional merger and led diversity, equity, and inclusion initiatives.