His research is focused on depression in the mentally ill. He has extensive experience as the principal psychiatric investigator in studies assessing psychiatric co-morbidity among medically ill populations. He has served as co-investigator on a study investigating PTSD among women with breast cancer. He has also completed a small grant studying psychiatrists' decision-making in the area of depression in the medically ill. He has studied psychiatrists practice patterns for depression in the medically ill in an observational practice study.