He attended medical school at the Medical College of Georgia and completed psychiatry residency at the University of California Davis. He went on to complete a fellowship in forensic psychiatry at University of North Carolina Chapel Hill.

Dr. Culpepper is a board-certified adult psychiatrist. He is also the director of Reno Behavioral Health Hospital.

Duncan found early his passion for assisting those with mental illness. He combined his clinical work with education earning a Doctorate of the Nursing Practice from the University of Nevada Reno, a bachelor’s degree in science of nursing from Grand Canyon University, and an Associate of Science Degree in Nursing from Carrington College.

With a goal of removing the stigma surrounding mental health, Duncan works tirelessly with his patients letting them know that they are not broken. Furthermore, he offers non-medical therapies for depression including coping skills, herbal treatments (lavender), and Neurostar TMS (Transcranial Magnetic Stimulation) Therapy. Duncan also specializes in opioid addiction and the use of Suboxone to treat opioid dependence. A happily married man of 8 years, Duncan has 2 children and lives in the Sugi Psychiatry and Wellness neighborhood.