Missouri Emergency Medicine expert witnesses draw on frontline experience in urban trauma centers in St. Louis and Kansas City, regional hospitals along the I-70 corridor, and rural critical access facilities. They often practice in trauma, pediatric, toxicology, prehospital care, and stroke or cardiac emergency programs. Many hold appointments with Missouri academic medical centers. They opine on standards of emergency care, triage decisions, diagnostic timing, transfer protocols, and management of time-sensitive conditions.