ArticleIs There a Relationship Between Physician and Facility Volumes of Ambulatory Procedures and Patient Outcomes?Chukmaitov, Askar S. MD, PhD; Menachemi, Nir PhD, MPH; Brown, Steven L. MS; Saunders, Charles PhD; Tang, Anqi BS; Brooks, Robert MD, MBAAuthor Information From the Division of Health Affairs, and Department of Family Medicine and Rural Health, Florida State University College of Medicine, Tallahassee (Drs Chukmaitov, Brown, Saunders, Tang, and Brooks); and Department of Health Care Organization and Policy, University of Alabama, Birmingham (Dr Menachemi). Corresponding author: Askar S. Chukmaitov, MD, PhD, Division of Health Affairs, and Department of Family Medicine and Rural Health, Florida State University College of Medicine, 1115 West Call St, Suite 3200, Tallahassee, FL 32306 (e-mail: email@example.com). Dr Chukmaitov had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. No author has conflicts of interest with the data presented. This study was supported by a grant from the Florida Agency for Health Care Administration. Human subject committee approval was obtained from our university institutional review board. Journal of Ambulatory Care Management: October-December 2008 - Volume 31 - Issue 4 - p 354-369 doi: 10.1097/01.JAC.0000336554.46837.a4 Buy Metrics Abstract This study explores associations between patient outcomes (7- and 30-day hospitalization and mortality) and healthcare provider (physician and facility) volumes of outpatient colonoscopy, cataract removal, and upper gastrointestinal endoscopy performed in outpatient surgical settings in Florida. Findings indicate that patients treated by high-volume physicians or facilities had lower adjusted odds ratios for hospitalizations and mortality. When physician and facility volume were assessed simultaneously, physician volume accounted for larger effects than facility volume in hospitalization models. When assessing both physician and facility volume together for mortality, facility volume was a stronger predictor of mortality outcomes at 30 days. Further examinations of associations of outpatient physician and facility volumes and patient outcomes are suggested. © 2008 Lippincott Williams & Wilkins, Inc.