With Dr. Michael Zito Michael Zito, MD, is a post-doctoral fellow at the VA Mental Illness Research, Education and Clinical Center in West Los Angeles and is a clinical instructor at the David Geffen School of Medicine at UCLA. He received his psychiatric training at the UCLA Semel Institute for Neuroscience and Human behavior, and his medical doctorate from Georgetown University. In his research, he is interested in understanding the complex relationship between substance use and psychosis.