David Lloyd Marcus is a licensed clinical social worker and retired associate professor of medicine with a Ph.D. in social work from the University of Tennessee and an M.S.W. from New York University. He has over 30 years of experience in gerontological research and psychotherapy in private practice. His curriculum vitae provides his contact information, educational background, academic appointments, societies and memberships, licenses, honors received, and other professional activities including research, consulting, and invited lectures.