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Founder & Clinical Psychologist

Narmatha (Narmi) Thillainathan

Adjunct Fellow - Macquarie University | FCCLP Clinical College |Aff. Ed&Dev Psych| Board Clin. Supervisor| MClin Psych | Msc Hlth Beh | Bsc Psych 

Narmi is a Clinical Psychologist, the Founder at Breakthrough Psychology Practice and also an Adjunct Fellow at Macquarie University, with 20 years of experience. She is passionate about the work she does with her clients and thrives on empowering clients to lead a more fulfilled life.


Narmi loves working with diverse clients, and provides assessment and therapy to young children, adolescents, adults and families. Narmi utilises evidence based practice in her clinical work and intuitively matches the best type of therapy suited to each client. This may include: Mindfulness, Cognitive Behaviour Therapy, Acceptance Commitment Therapy, Dialectical Behavioural Therapy, Compassion Focussed therapy and Psychodynamic Psychotherapy.

Narmi has worked across multiple workplace settings including disability, occupational rehabilitation, pain management, culture change, public and private schools, detention centres, private inpatient and outpatient hospital and NSW Health Community health. 


At present, Narmi leads the Cognitive testing clinic at Breakthrough Psychology, where she supports schools and families with their presenting difficulties, including Educational and Developmental assessments. She consults to organisations, schools and offers in-house training to promote professional development and development of high standards in clinical and ethical practice.

Narmi is a AHPRA Board approved Clinical Supervisor and supervises psychologist in training or early-mid career psychologists. She is passionate above developing and supporting graduate psychologists and is aligned to various universities in facilitating university placements. Narmi is also passionate about facilitating parenting programs, such as the 1-2-3 Magic and Emotion Coaching program, and teaching parenting skills for anxious children or behaviour management. She regularly conducts parent training in the clinic and externally. Narmi is a published author and sits on the Board of Directors for the North Sydney Area Health Network.


Personally, Narmi was born in Srilanka, however due to the civil war she has lived in Zimbabwe, New Zealand and 20 years in Australia. Narmi is a loving mother to two children and enjoys a family life. She is an active community member, always volunteering her time and skills in spiritual or community groups. Narmi loves travelling, hiking, reading, exercising, helping and hanging out with valued friends. By nature, she is compassionate, kind and caring.

Narmi can be seen on Wednesdays (limited availability) between 10am-5pm. She is available in the Testing Clinic on Thursdays and is available for supervision for psychologists and registrars on Fridays.

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