Mr. Zarwell is the Director of the Office of Investigative and Forensic Sciences at the National Institute of Justice.
Mr. Zarwell has more than 20 years of experience in the forensic science field.
For the last several years, Mr. Zarwell has served as the Chief Toxicologist for Washington, D.C.’s Office of the Chief Medical Examiner. Mr. Zarwell has engaged in substantial professional activities beyond his position in the Office of the Chief Medical Examiner. Notably, he received certification as a Diplomate of Forensic Toxicology from the American Board of Forensic Toxicologist and continues to act in this position. He is a member of the American Board of Forensic Toxicology and the Society of Forensic Toxicologists and has presented at numerous conferences throughout the United States.