BACKGROUND:A structured, medical preoperative evaluation may positively impact the perioperative course of medically complex patients. Hospitalists are in a unique position to assist in preoperative evaluations, given their expertise with inpatient medicine and postoperative surgical consultation.OBJECTIVE:To evaluate specific outcomes after addition of a Hospitalist‐run, medical Preoperative clinic to the standard Anesthesia preoperative evaluation.DESIGN, SETTING, PATIENTS:A pre/post retrospective, comparative review of outcomes of 5223 noncardiac surgical patients at a tertiary care Veterans Administration (VA) medical center.RESULTS:Length of stay was reduced for inpatients with an American Society of Anesthesia (ASA) score of 3 or higher (P < 0.0001). There was a trend towards a reduction in same‐day, medically avoidable surgical cancellations (8.5% vs 4.9%, P = 0.065). More perioperative beta blockers were used (P < 0.0001) and more stress tests were ordered (P = 0.012). Inpatient mortality rates were reduced (1.27% vs 0.36%, P = 0.0158).CONCLUSION:A structured medical preoperative evaluation may benefit medically complex patients and improve perioperative processes and outcomes. Journal of Hospital Medicine 2012. © 2012 Society of Hospital Medicine