He directs the Medical Humanities and Ethics Certificate Program for medical students. At UTHealth, he also holds appointments in the Department of Family Medicine, the Department of Psychiatry, the Graduate School of Biomedical Sciences, and the School of Dentistry. And he holds a faculty appointment at the Institute for Spirituality and Health. He is the co-author of two books: Living in Limbo: Life in the Midst of Uncertainty and 100 Years of Happiness: Insights and Findings from the Experts. He is currently co-authoring Medical Humanities: An Introduction, and he is completing his first monograph, titled Religious Mourning: Reversals and Restorations in Psychological Portraits of Religious Leaders. Dr. Carlin also has published over 100 essays, articles, and book reviews.