Sheetz KH, et al. - Researchers examined the consistency of surgical quality across hospitals within the networks of the highest-rated US hospitals. Using data from Medicare beneficiaries who were undergoing colectomy, coronary artery bypass graft, or hip replacement between 2005 and 2014, they performed this longitudinal analysis of 87 hospitals that participated in 1 of 16 networks that are affiliated with US News & World Report Honor Roll hospitals, estimating the disparity in risk-adjusted surgical outcomes at Honor Roll and affiliated hospitals within and across networks. This population-based study of 87 hospitals and 143,174 patients did not display consistently better outcomes at Honor Roll hospitals. Across affiliated hospitals within networks showed wide variation in the risk-adjusted rates for all outcomes; for example, the differences in failure to rescue varied by 1.1-fold in some networks to as much as 4.9-fold in others. Observations emphasize the necessity for monitoring outcomes by networks to characterize and improve the extent to which a uniform standard of care is being delivered.