In a letter to HHS, the National Association of Accountable Care Organizations (NAACOS) recommended that the agency promote significant ACO growth after several years of policies have hampered healthcare’s move toward value-based care. The letter, written by President and CEO of NAACOS, Clif Gaus, ScD, outlined the cost-saving impact ACOs have had on Medicare spending and urged new HHS secretary, Xavier Becerra, to drive ACO growth.