Gillian Isaacs Russell, Ph.D., NCPsyA is a member of the British Psychoanalytic Council, the British Psychotherapy Foundation, the American Psychoanalytic Association, and the International Psychoanalytical Association. She is a Registered Psychotherapist in the state of Colorado. She has been in private practice in the UK and USA since 1988.

She was Chief Clinical Supervisor and Consultant for therapeutic teams at the University of Portsmouth, Department of Counseling and Student Services, the Red Admiral Project, a foundation providing therapy to people affected by HIV/AIDS, and the Southampton Women's Therapy Centre in the U.K.

Dr. Isaacs Russell was a member of the teaching faculty and a personal tutor for candidates at the London Centre for Psychotherapy, now part of the British Psychotherapy Foundation.

She has served on the Editorial Board, as Book Reviews Editor, and currently on the Reviewing Panel for the British Journal for Psychotherapy. ​Dr. Isaacs Russell is particularly interested in women's mental health, especially perinatal mood and anxiety disorders, birth trauma, and difficulties around parenting. She designed a pilot perinatal mental health project focused primarily on Native American (Lakota) women. The project aimed to train health workers in the routine maternal care setting to screen for, prevent, and contain depression and anxiety in the antenatal period, as well as providing dedicated postnatal counseling. She is a member of the Marcé Society and the World Association for Infant Mental Health. 

In 2008 Dr. Isaacs Russell relocated to the United States where she has been a supervisor and training therapist for candidates at the China American Psychoanalytic Alliance. She was Chair of Supervision, served on the Board of Directors, and was a member of the teaching faculty for CAPA.  

Dr. Isaacs Russell’s book, Screen Relations: the Limits of Computer-Mediation in Psychoanalysis and Psychotherapy, was published by Karnac Books in April 2015. 

She is a Guest Co-Editor for a special 2017 Psychoanalysis and Technology issue of Psychoanalytic Perspectives.

She and co-author Dr. Todd Essig contributed a chapter, "Bodies and screen relations: moving from wishful thinking to informed decision-making," in Govrin, A. & Mills, J. (eds.) (2019) Innovations in Psychoanalysis: Originality, Development, Progress. Routledge, London.
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Dr. Isaacs Russell, recipient of the 2021 APsaA Distinguished Service Award, served on the COVID-19 Advisory Team for the American Psychoanalytic Association from 2020-22.