Debra Lee, MD, and Ben Lawner, DO, MS, EMT-P, are co-authors of the chapter titled “Medical Oversight of EMS Systems,” which has been published in Emergency Medical Services: Clinical Practice and Oversight, the new textbook for the National EMS Medical Directors Course and Practicum sponsored by the National Association of EMS Physicians. The publisher is John Wiley and Sons, Inc. Also contributing to this chapter were Robert Bass, MD, recently retired from the executive director position at MIEMSS, and J.V. Nable, MD, EMT-P, now an emergency medicine and EMS attending at Georgetown University Hospital.