Dr. Muller is a board-certified toxicologist, fellow of the American Academy of Clinical Toxicology, and registered pharmacist with over 20 years’ experience in the field of clinical toxicology. After a nearly 20-year career leading the Poison Control Center at The Children’s Hospital of Philadelphia, which included consulting on toxicology cases from 21 counties in Pennsylvania and Delaware, Dr. Muller is presently an independent consultant specializing in providing expert witness testimony on cases involving medications, street drugs, alcohol, chemicals, and environmental toxins. She is also adjunct faculty at the University of Pennsylvania School of Veterinary Medicine.