Virginia fentanyl overdose expert witnesses assess overdose care, toxicology findings, and opioid prescribing practices across emergency, EMS, and inpatient settings. They often come from addiction medicine, emergency medicine, medical toxicology, pharmacy, and forensic pathology, with experience in Virginia’s high-volume EDs and academic centers in Richmond and Charlottesville. They evaluate causation, naloxone response, monitoring standards, and post-overdose treatment planning.