ToxIC Registry participation is voluntary on the part of participating clinical sites. Although these sites vary substantially in the number of medical toxicologists, number of clinical facilities, total patient population and case load, all agree to enter de-identified case information for any patient seen by a medical toxicologist at the bedside. The table below lists the current active sites which range from institutional groups with a single site and/or medical toxicologists to groups with multiple medical toxicologists seeing patients across multiple clinical facilities. In addition, several ToxIC sites also maintain an active Fellowship program in Medical Toxicology.