Dr. Nikki Johnson is the Chief of Mental Health Services and Programs for the Denver Sheriff Department, serving as a member of the executive leadership team. She has worked in jails and prisons with both juveniles and adults for the past 20 years. Dr. Johnson earned a bachelor's degree in psychology from Kansas State University, a master's degree in counseling psychology from Regis University, and a doctorate in clinical psychology from the Colorado School of Professional Psychology. She has practiced as a licensed psychologist in the state of Colorado since 2008 and as a Certified Addiction Specialist since 2010.