Our Team

Dr David Demmer

Founder, Director & Clinical Psychologist

Dave’s therapeutic style is collaborative, authentic, and strategy-focused. As well as 1:1 therapy, Dave is trained in couples therapy and holds a diploma of clinical hypnosis.

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Ms Steph Sier

Senior Clinician and Therapist/Mental Health Accredited Social Worker

Steph is a senior clinician and therapist at Wellington Street Psychology, and a mental health accredited social worker. She has an extensive background working in inpatient and outpatient mental health programs and helps guide and support the clinical team at Wellington Street.

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Dr Bella Marker

Senior Clinical Psychologist

Bella adopts a compassionate and holistic approach when working with clients. She is a LGBTQIA+ friendly practitioner trained in Compassion-Focussed Therapy, and believes in the importance of empathy, collaboration, and a non-judgmental attitude.

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Ms Carina Allen

Psychologist

Carina received her Bachelor of Science degree (majoring in psychology) from The University of Melbourne and her Honours and Masters of Clinical Psychology from Federation University.

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Mr Kefu Xie

Psychologist

Kefu is experienced working with adults, youth and families. He is an LGBTQIA+ friendly practitioner and adopts a collaborative, non-judgemental, and empathetic approach. Kefu has experience treating a variety of problems including depression, anxiety, substance-related issues, and trauma.

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Ms Ridhima Tandon

Psychologist

Ridhima is a registered psychologist. She takes a warm, welcoming, and person-centred approach to therapy. Ridhima is experienced in CBT, mindfulness, and trauma-informed therapy.

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Ms Amy Bortz

Psychologist

Amy holds particular experience in working with adolescents and adults experiencing eating disorders, body image difficulties, and anxiety and mood disorders.

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Mr James Traugott

Provisional Psychologist & Couples Therapist

James is a registered provisional psychologist. He offers a therapeutic relationship that provides a secure place of appreciation, challenge, change, and value. He runs an evidence based practice focused on practical solutions.

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Ms Jessica Du

Psychologist

Jessica is a registered psychologist with AHPRA. She obtained her honours degree in psychology at Deakin University and post graduate training in clinical psychology at the University of Canberra.

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Mr Jake Glanc

Provisional Psychologist

Jake is a registered provisional psychologist. Jake aims to work collaboratively and compassionately with his clients, believing that a strong and honest therapeutic relationship is the best predictor of success in therapy.

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