Lower Provider Volume is Associated with Higher Failure Rates for Endoscopic Retrograde Cholangiopancreatography

BACKGROUND Among physicians who perform endoscopic retrograde cholangiopancreatography (ERCP), the relationship between procedure volume and outcome is unknown. OBJECTIVE Quantify the ERCP volume-outcome relationship by measuring provider-specific failure rates, hospitalization rates, and other quality measures. RESEARCH DESIGN Retrospective cohort. SUBJECTS A total of 16,968 ERCPs performed by 130 physicians between 2001 and 2011, identified in the Indiana Network for Patient Care. MEASURES Physicians were classified by their average annual Indiana Network for Patient Care volume and stratified into low (