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Karen Williamson brings three decades of marketing, communications and program management experience in the health care and government services sectors. For 17 years, she worked at AmeriChoice Health Services, Inc., an innovative Medicaid managed health care company where she held marketing and strategic planning positions at the corporate and local plan level. (AmeriChoice was acquired by UnitedHealthcare in 2002 and became its platform for serving vulnerable public sector communities.) Her marketing and communications expertise was applied to a range of audiences — from state regulators, providers, community leaders to Medicaid beneficiaries. She also spearheaded the entry of AmeriChoice into Medicare managed care. She has served on the boards of MedStar Health Research Institute and the Green Door, a program for people with persistent mental illness. Ms. Williamson has an AB in economics from Wellesley College in Wellesley, Massachusetts, and an MBA in marketing from the University of Chicago in Chicago, Illinois.