He is Founder of the Institute for Reducing Disparities, LLC, President of Senior Psychiatrists Inc, Professor of Psychiatry and Behavioral Sciences at the George Washington University, emeritus professor of psychiatry at the Dell Medical School, University of Texas, Austin, and emeritus professor and formerly chair of psychiatry and behavioral sciences at Howard University School of Medicine. He received a PhD in Psychology from the University of New Hampshire and MD from the Pritzker School of Medicine, University of Chicago, residency at Stanford University and fellowship at the National Institute of Mental Health. He has held faculty positions at the University of Illinois, Urbana, University of California, Irvine, Vanderbilt University, University of Arkansas, and Howard University. He was past Presidents of the DC chapter, Mental Health America, the Washington Psychiatric Society, and Black Psychiatrists of America. He received the American Psychiatric Foundation Award for Advancing Minority Mental Health, Jeanne Spurlock Award , and the Solomon Carter Fuller Award by the American Psychiatric Association, the National Alliance for the Mentally Ill Exemplary Psychiatrist Award, and the George Winokur Clinical Research Award from the American Academy of Clinical Psychiatrists. He has over 200 publications, and former editor in chief of the Journal of the National Medical Association.