The potential for errors in radiotherapy is high. With the growing sophistication of treatments, opportunities for mistakes steadily increase. Regulatory pressures and liability concerns rise as public anxiety mounts over media reports of medical events. Medicare and various health insurance carriers continue pressing for quality measures. Evidence of outcomes is becoming vital in healthcare. Whether you are a radiation oncologist, physicist, or administrator, a complete error reduction solution must effectively control risk in your entire treatment process. Developing and creating such a program is daunting, time consuming, and can deplete important clinical resources. MERP provides a ready-made, comprehensive solution for managing risk and making systems improvement. The MERP model is based on experience gained from use at multiple centers throughout the country. MERP is a powerful tool for implementing proactive risk reduction through error analysis and action plans. MERP facilitates a comprehensive approach to improving patient safety through the reduction of preventable systems-related errors. Whether your institution is freestanding, hospital-based, or comprised of multiple centers, MERP helps minimize mistakes at all levels. From minor documentation misses to mistreatments resulting in reportable, medical events, MERP covers the entire treatment spectrum in effectively managing risk and making your program complete.