Our People
Martin Wieczorek
Principal Clinical Psychologist
Martin Wieczorek is an AHPRA-registered Clinical Psychologist, board-approved supervisor and founder of The Jarrah Tree Practice. He holds Advanced Accreditation in Schema Therapy with the International Society of Schema Therapy and has a special interest in the treatment of recurrent mood and anxiety issues. His therapeutic practice draws heavily from evidence-based techniques grounded in Cognitive Behavioural Therapy and Schema Therapy.
Martin has gained a diverse range of clinical experience working with some of the most highly respected mental health departments in NSW, including Consultation Liaison Psychiatry at St Vincent’s Hospital, the Therapy and Recovery Service at Fairfield Liverpool Community Mental Health, the University of Sydney Gambling Treatment and Research Clinic, the Youth Cancer Service at Prince of Wales and Sydney Childrens Hospitals, as well as clinical experience in inpatient psychiatric units and private practice. He has treated individuals with chronic and severe mental health difficulties on a long-term basis and has worked with individuals of varying ages, suffering from a range of conditions, including mood, anxiety, psychotic and personality disorders.
Martin has also guest lectured for the Clinical Psychology Masters Program at the University of New South Wales, and has facilitated training workshops for NSW problem gambling counsellors, as well as contributing to government and academic research reports and developing self-help resources for the Responsible Gambling Fund.
Martin holds the below tertiary qualifications:
Master of Clinical Psychology from the University of Technology Sydney
Bachelor of Science (Honours) in Psychology from The University of Sydney
Bachelor of Jazz Performance from the Western Australia Academy of Performing Arts
Martin's approach
Schema therapy is an emotion-focused therapy with an established evidence base for a number of conditions including trauma, personality disorders and chronic depression. As such, it may be particularly suitable for individuals for whom traditional CBT approaches have not resulted in sustained improvements.
Schema Therapy seeks to understand how an individual's current problems relate to core beliefs and early life experiences. Very often these links are unconscious. Understanding and healing these “emotional scars” from the past can be a powerful part of the therapeutic process. Click here to learn more about Schema Therapy.
While Martin is very passionate about Schema Therapy, he is also trained and well-versed in Cognitive Behavioural Therapy, Acceptance and Commitment Therapy, Dialectical Behaviour Therapy, Mindfulness-integrated Cognitive Behavioural Therapy, and Motivational Interviewing. All of these approaches have been scientifically proven and have something profound to offer in the right context.
Medicare Provider
Under the Medicare Benefits Schedule, Martin can provide psychological services to individuals referred by their General Practitioner.
Registered Clinical Psychologist
Martin is registered with The Australian Health Practitioner’s Regulation Agency’s Psychology Board of Australia (PSY0001890648). He holds a practice endorsement in Clinical Psychology.
Professional memberships
Martin is a member of the Australian Clinical Psychology Association (ACPA), a national professional body that represents registered psychologists with a practice endorsement in Clinical Psychology.
Martin is a member of the International Society for Schema Therapy and holds Advanced accreditation.
Danielle Gessler
Clinical Psychologist
Danielle (she/her) is a Clinical Psychologist offering an integrative, developmentally informed approach to therapy. Her work is grounded in the understanding that we are shaped in relationship - especially in the earliest stages of life - and that these experiences continue to live on in how we feel, relate, and move through the world.
She brings a quiet, attentive presence to both psychological and embodied experience. This includes a gentle awareness of thoughts, emotions, and sensations, and how these may be held within the nervous system, often outside of conscious awareness.
Danielle’s approach is informed by Cognitive Behavioural Therapy (CBT) and incorporated with her training in systemic family therapy, attachment and developmental perspectives, psychodynamic thinking, and body-based approaches such as Deep Brain Reorienting (DBR) and Eye Movement Desensitization and Reprocessing (EMDR). These are held lightly, in service of what is emerging in the moment and tailored to individual needs, rather than applied in a fixed or prescriptive way. At the centre of her work is a commitment to moving at a pace that feels safe, and to listening closely to what each person’s system is ready for. She understands that early experiences can remain held in the body, shaping patterns of protection, connection, and disconnection over time.
Danielle’s experience prior to entering private practice was within public health: both hospital, and community settings, involving working with children, young people, and families experiencing complex developmental trauma. This continues to inform her sensitivity to developmental and relational processes. She currently works with adults, offering a calm, collaborative space grounded in care and respect. Her work is guided by a belief in the inherent intelligence of the nervous system, and in the possibility of change when experiences are able to be met, felt, and gently processed. Danielle supports clients to come into a more connected relationship with themselves, to understand longstanding patterns, and to experience a greater sense of safety, integration, and ease.
Danielle developed her knowledge and experience in psychology at the University of Sydney in undergraduate, graduate and post-graduate psychological studies. Alongside this academic journey she has held positions in the Department of Academic Psychiatry at Royal North Shore Hospital, as well as research and casual teaching roles at the University of Sydney. She has been an active contributor and consumer of academic research and has published over 20 peer reviewed research papers in the fields of trauma, neuro-imaging and health literacy.
Danielle holds the below tertiary qualifications:
Master of Clinical Psychology from The University of Sydney
Master of Philosophy in Psychology from The University of Sydney
Bachelor of Science (Honours) in Psychology from The University of Sydney
Graduate Diploma in Psychology from The University of Sydney
Bachelor of Arts Liberal Studies from The University of Sydney
Medicare Provider
Under the Medicare Benefits Schedule, Danielle can provide psychological services to individuals referred by their General Practitioner.
Registered Clinical Psychologist
Danielle is registered with The Australian Health Practitioner’s Regulation Agency’s Psychology Board of Australia (PSY0002092794). She holds a practice endorsement in Clinical Psychology.
Professional memberships
Danielle is a member of the Australian Clinical Psychology Association (ACPA), a national professional body that represents registered psychologists with a practice endorsement in Clinical Psychology.