Psychological Group of Washington Staff
PGW believes that the healing experience begins with finding the right therapist. Together we can partner with you on your road to good health. PGW has a number of licensed psychologists and counselors with diverse interests and specialties to address specific concerns. Take a moment to review our backgrounds so that you can feel assured that you are beginning your journey with a therapist who will best meet your needs.
Katherine S. Marshall, Psy.D.
Katherine S. Marshall, Psy.D. is a licensed clinical psychologist with a rich clinical background. Her study and training have included work with children, adolescents and adults who experience mental illness, life transitions and interpersonal difficulties. Dr. Marshall earned her Bachelors of Arts degree in psychology from The George Washington University in 1998. Thereafter, she continued her education at The George Washington University where she obtained her doctoral degree in 2004.
Today, Dr. Marshall also holds certification for school psychology. She is a partner with the Psychological Group of Washington in private practice and an Assistant Clinical Psychology Professor for The George Washington University. Dr. Marshall is currently authoring her first children’s publication geared to assist children in coping with mental illnesses. Further, in working in the Middle East, Dr. Marshall has provided clinical services to military personnel with varying struggles that include anxiety, mood, post traumatic stress disorder and family and marital conflicts.
Maia Coleman King, Ph. D.
Dr. Maia Coleman King is a licensed clinical psychologist accepting patients for individual, group and couples therapy. Dr. Coleman King specializes in treating women struggling with symptoms of depression and anxiety, as well as couples seeking assistance in building communication skills, overcoming differences, and making decisions that are more satisfying. In addition, she has over ten years of experience in the psychological assessment of children, adults and forensic populations.
Dr. Coleman King earned her Ph.D. at Howard University in Clinical Psychology in 2004. She is also a graduate of the University of Michigan, Ann Arbor where she earned a Master’s degree in Developmental Psychology. Dr. Coleman King completed her Internship at the APA-accredited Howard University Counseling Service Internship Program. She has five years of experience working as a Certified School Psychologist in the District of Columbia Public School System, and recently worked as a Psychology Program Manager for the District. Dr. Coleman King completed a Post-Graduate Fellowship with the Washington Chapter of the New York Freudian Society and is a professional member of the American Psychological Association as well as the Association for Black Psychologists.
Michael E. Barnes, Ph. D.
Dr. Michael Barnes is an Adjunct Professor at Argosy University (American School of Professional Psychology) where he teaches courses on Personality Assessment, Integrative Assessment, and Juvenile/Child Forensic Psychology. He is also an adjunct professor at American University teaching the Integrated Battery Assessment course. At the Howard University Counseling Service, he is a consulting psychologist who supervises psychodiagnostics for the Center's predoctoral interns.
He is a member of the American Psychological Association and its Division on Law and Psychology. He is also a member of the Association of Black Psychologists. In addition to duties at the Court, he has an independent practice in clinical/forensic psychology that focuses on assessment and treatment matters in Washington, DC. He is a consultant to the DC Children's Advocacy Center supervising testing and treatment for children. As a consulting psychologist for Court Services and Supervision Agency (CSOSA) for the District of Columbia, he provides clinical/forensic evaluations for adult offenders as well.
Dr. Barnes received his doctorate in clinical psychology from Howard University, Washington, DC in 1990, and completed his internship in the Department of Psychiatry at Howard University Hospital in 1988-1989. He became licensed to practice psychology in the District of Columbia in 1992.
Nickole Scott Conerly, Ph. D.
Dr.Nickole Scott Conerly is a licensed psychologist who earned her degree in counseling psychology from Howard University. She is employed at the Howard University Counseling Service and carries the title of the Director of Training. In that role, she directs the APA accredited internship training program in psychology housed at the counseling service. Dr. Scott Conerly is a certified group psychotherapist and bereavement facilitator. She is also certified as an AIDS education trainer. Her interests are training, primary prevention, bereavement, domestic violence,and incest survivors. A major interest of Dr. Scott Conerly is decreasing the stigma that many minorities associate with seeking mental health treatment.
Thomas R. Wessel, Ed. D., CGP
Dr. Thomas R. Wessel is a psychologist and nationally certified group psychotherapist. He is the Dean for Counseling and Career Development at Howard University and the Director of the University Counseling Service, a position he has held since 1996. Dr. Wessel holds a doctorate in counseling from the George Washington University and several postdoctoral certificates in the field of psychology.
As a senior member of the President's management team, he has worked extensively on strategic planning and others matters involving policy and planning at Howard University. Dr. Wessel has served as membership chair, Program Chair, and President of the Mid-Atlantic Group Psychotherapy Society (MAGPS) and held offices in the American Group Psychotherapy Association (AGPA). He is the chair of the Group Psychotherapy Training faculty of the Washington School of Psychiatry and the Director of the National Group Psychotherapy Institute affiliated with the Washington School of Psychiatry. He has published and presented at national conferences on topics of cultural/racial diversity, special issues in counseling the academic underachiever, and object relations therapy.
Dr. Wessel served as a senior member of U. S. Peace Corps headquarters staff in Washington, D.C. with direct responsibility for a wide array of support services for over 6000 volunteers throughout the world. He advised the Director of Peace Corps on policy matters and was involved in the training of Peace Corps volunteers and Peace Corps country directors. He was an invitee at the White House Conference on Mental Health in 1998.