Virginia began implementing a Common Core Formulary within its Medicaid managed care program in 2017 for CCC Plus members and in 2018 for Medallion 4.0 members. The Virginia Association of Health Plans (VAHP) engaged The Menges Group to analyze the fiscal and programmatic impacts of this policy change. Our tabulations indicate that the change to the Common Core Formulary led to increased net (post-rebate) Medicaid costs of $13.2 million during calendar year 2019, including $5.5 million in additional state funds.