Dr. Hatten is an Assistant Professor at the University of Colorado School of Medicine with a primary appointment in the Section of Medical Toxicology, Department of Emergency Medicine. In addition, he is an attending physician at the Rocky Mountain Poison and Drug Center. He is faculty for the Emergency Medicine Residency, the Occupational Medicine Residency, and Medical Toxicology Fellowship programs in Denver.  He is board certified in both emergency medicine and medical toxicology and actively practices both emergency medicine and medical toxicology.

Dr. Hatten received his M.D. at the University of Texas – Southwestern Medical Center in Dallas, TX.  After completion of this degree, he entered residency in emergency medicine at Denver Health Medical Center.  Following this, he worked as faculty in the emergency medicine residency program at Denver Health Medical Center and the University of Colorado School of Medicine for a single year.   Subsequently, he entered the Medical Toxicology Fellowship program at Oregon Health and Science University in Portland, Oregon.  During his fellowship, he simultaneously obtained a Masters in Public Health in epidemiology and biostatistics.  Upon completion of his Fellowship and M.P.H. degree, he returned to Denver in 2013 and joined the faculty at the University of Colorado School of Medicine, the Rocky Mountain Poison and Drug Center, and Toxicology Associates.