Mac completed his pre-doctoral internship and post-doctoral fellowship at the Utah State Hospital where he worked with individuals experiencing severe and persistent mental illness. He then moved to Seattle, Washington and worked in an outpatient clinic that specialized in Dialectical Behavior Therapy as well as other research driven interventions. After being in Seattle for two years, he moved to Salt Lake City, Utah and returned to the Utah State Hospital as a staff psychologist. Mac also works with individuals in a private practice setting. In addition, he is currently pursuing certification as a DBT therapist.