John Lewis Equality in Medicare and Medicaid Treatment Act of 2023 This bill requires the Center for Medicare and Medicaid Innovation to test a payment model that addresses social determinants of health and health disparities, particularly with respect to minorities, underserved areas, and high-risk individuals. The bill also generally incorporates consideration of such factors into the selection, implementation, and evaluation of other models, including the decision as to whether to expand a model's duration and scope.