“…The finding that ACOs do not reduce and may even improve some measures of patient satisfaction and perceived quality of care suggests that ACOs have not prompted the patient frustration associated with the HMO model, potentially due to the preservation of patient choice in providers in the ACO model among other differences (Miller & Luft, 2002). Similar to ACOs, P4P programs have been associated with small positive effects on the process measures targeted; however, neither model has demonstrated consistent effects on health outcomes (Flodgren et al, 2011; Gilmore et al, 2007; Lin, Yin, Huang, & Du, 2016; Mendelson et al, 2017; Rosenthal & Frank, 2006; Rosenthal, Frank, Li, & Epstein, 2005; Rosenthal, Landon, Normand, Frank, & Epstein, 2006; Rosenthal, Landrum, Robbins, & Schneider, 2016; Sutton et al, 2012; Werner, Konetzka, & Polsky, 2013). To improve population health and outcomes, ACO programs may need to incentivize measures of quality that are more closely tied to outcomes.…”