Our Principals

The Keswick Sleep Institute is comprised of an inter-disciplinary group of motivated and caring physicians and health care professionals specializing in sleep health and wellness. When referred to Keswick Sleep Institute by your physician, our “dream team” communicates closely with your physician to ensure your sleep health is optimum. Through screening, diagnosis, education, follow-up, clinical research, specialized programs and sleep assessments – we strive to ensure that your sleep health and subsequently, the quality of your daytime functioning, is given the level of attention it warrants.

Terry Cralle, R.N.

Terry Cralle is Corporate Vice President of the Keswick Sleep Institute. She holds a B.A. in Sociology from Randolph-Macon College and received her Bachelors of Science in Nursing at the Virginia Commonwealth University and completed a Masters of Science in Healthcare Management with an Emphasis in Healthcare Risk Management from the Finch University of Health Sciences at the Chicago Medical School. A member of the National Association for Healthcare Quality, Terry recently became a Certified Professional in Healthcare Quality as well as a Certified Quality Auditor. Terry has had over 20 years experience as a healthcare and medico-legal consultant. She has published on clinical research topics as well as serving as Lecturer at Piedmont Virginia Community College in Charlottesville, Virginia.

Demetrios Julius, M.D.

Demetrios A. Julius, M.D. developed an interest in the functioning and interplay of the mind and the body while he was an undergraduate at Harvard College. During his years as a medical student and resident in training at the University of Cincinnati College of Medicine, he had the good fortune to become involved with the Department of Psychiatry. At that time, Cincinnati was a major psychoanalytic training center but had also ventured into new areas of psychiatry. One such innovation was the establishment of one of the country’s first research laboratories to study the mysterious and relatively little understood phenomenon of sleep. After a three year assignment at the National Institute on Drug Abuse in Washington, D.C., Dr. Julius and his new bride accepted the challenging assignment from the U.S. Embassy in Tehran, Iran to establish the first community mental health center for Americans working overseas. After this nineteen month tour was cut short by the Iranian Revolution, Dr. Julius returned to the U.S. and settled in Richmond, Virginia as the Chief of Psychiatry of the McGuire V.A. Medical Center. He attained the academic rank of Professor of Psychiatry at the Medical College of Virginia as well as Visiting Professor at the University of Virginia. During this time, he founded the first Sleep Disorders Center at a public facility in Richmond in 1984. This was followed by the first private Sleep Disorders Center in 1986. He has worked continuously in the field of sleep disorders since that time. His other interests include international conflict resolution which involved numerous projects over a twenty five year period with Arabs and Israelis, Estonians and Russians, and Greeks and Turks. Additionally, he maintains an interest in applied psychodynamics and has an ongoing project dealing with the psychobiographical study of the Beatles and of John Lennon in particular.

W. David Brown, Ph.D.

Dr. Brown completed his Ph.D. in Clinical Psychology at Southwestern Medical School in Dallas, TX. He trained in Sleep Medicine at Presbyterian Hospital in Dallas. He was Board Certified in Sleep Medicine in 1992 and is a Fellow in the American Academy of Sleep Medicine. He is also Certified in Behavioral Sleep Medicine, a new field that specializes in behavioral interventions in many sleep disorders. Dr. Brown was the Clinical Director of the Sleep Evaluation Center at Elliot Hospital in Manchester, NH and taught undergraduate psychology at St. Anselm College and was director of the Sleep Center at Lakes Region General Hospital in Laconia, NH. As a clinical Associate in Psychiatry at Dartmouth Medical School, he taught undergraduate Psychology at Dartmouth College in Hanover, NH. Dr. Brown has numerous publications on sleep and sleep disorders and is an active speaker on the topic.