1. Physicians' participation in ACOs is lower in places with vulnerable populations than in more affluent communities Author(s): Yasaitis, Laura C., authorPajerowski, William, authorPolsky, Daniel, authorWerner, Rachel M., author Publication: Philadelphia, PA : Leonard Davis Institute of Health Economics, August 2016 Subject(s): Accountable Care Organizations -- statistics & numerical dataHealth Services Accessibility -- statistics & numerical dataHealthcare DisparitiesVulnerable PopulationsPhysiciansPovertySocioeconomic FactorsHumansUnited States