Dr. Heard attended medical school at the University of California San Diego. His post-graduate training includes a residency in Emergency Medicine at the Denver Health Medical Center and a Medical Toxicology Fellowship at the Rocky Mountain Poison and Drug Center. He is a fellow of the American College of Emergency Physicians and the American College of Medical Toxicology.
His current positions are Medical Toxicology Fellowship Director at the Rocky Mountain Poison and Drug Center and Section Chief of Medical Toxicology at the University of Colorado School of Medicine where he is a Professor of Emergency Medicine and Medicine. He works and teaches at the University of Colorado Hospital Emergency Department. His research interests include cocaine toxicity, misuse of over-the-counter analgesics, acetaminophen poisoning, and research design. He has authored over 50 papers and 20 book chapters in various areas of Emergency Medicine and Toxicology.