Mark Marshall M.D. is a Board Certified Psychiatrist. He is a graduate of University of Illinois School of Medicine at Chicago and completed his psychiatric residency at the University of Colorado Health Science Center. Dr. Marshall has worked in community mental health for over 25 years. He has had experience caring for individuals with severe mental illness on high itensity outpatient and outreach teams. He also has extensive experience in outpatient Dual Diagnosed treatment for substance use disorders. In the past Dr. Marshall has also worked with Homeless outreach teams and Integrative Mental Health Care in a primary care setting. Dr. Marshall has been very dedicated in caring for individuals with severe mental health illness and their families. When he is not working, Dr. Marshall enjoys scuba diving, snowbiking, and hiking.