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Meet the Team


Founder, Clinical Psychologist & AHPRA Supervisor

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 of Breakthrough Psychology Practice and also an Adjuct Fellow (Macquarie University), with 20 years of experience. She is the founder of Breakthrough Psychology Practice of 13 years in West Pennant Hills. 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 leads the Testing Clinic and Breakthrough Psychology with 20 years of experience and works collabratively with her team to support clients with Diagnostic Assessments. She is also passioante about training and supervising psychologists, which is an intergral aspect of her mission at Breakthrough Psychology but also extends this support to external psychologists in training or otherwise. In addition to this, she also offeres group training and consultations to schools and other organisations on topics such as parenting, anxiety management, ADHD and diagnostic assessments.


Office Manager

Nicole Strickland

Bio Coming

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Registered Psychologist
Nadine Sarah

MPP | BA Psych | BSC Psych (Hon)

Nadine is an experienced Registered Psychologist, with a Professional Masters in Psychology from Macquarie University and an honours degree in Psychology. She has worked in complex systems, such as the Northern Beaches Hospital, Child Protection (data analysis) and Head to Health before entering private practice.

Nadine is passionat about working with adolescents and young adults. She loves sharing her knowledge of Psychology in assisting by transforming the lives of clients who are experiencing anxiety, depression, adjustment, grief and loss, trauma.

She has most recently returned from a Hatha & Asthtanga Vinyasa Yoga Teacher Training in Rishikesh, India. She balances this passion by her daily self-care practice of mindfulness, pranayama and yoga. By nature, Nadine is compassionate, calm, patient and non-judgemental in the way she engages with her clients.

Her orientation of work is client-centred, holistic and varies to suit each client. She is trained in cognitive behavioural, acceptance and commitment and mindfulness therapies.

Nadine also speaks Tamil fluently.

Nadine is a member of the Australian Association of Psychologists incorporated (AAPi). 

Nadine is currently available on: Wed and Thur: 11-7pm


Registered Psychologist | Clinical Psychology Registrar

Andrew Sedger

MClin Psych| BSocSc Psych (Hons) | MEnv Law | BAppSc Env (Hons) | GradDip Comms

Andrew is a mature and motivated Registered Psychologist | Clinical Psychologist Registrar with a range of unique skills and experience. He comes to psychology from a 20-year career in communications where helped people understand, solve and explain complex issues. Andrew has a Bachelor of Social Science in Psychology (Honours) and is in the final semester of a Master of Clinical Psychology. He also has qualifications in environmental science and law.

Andrew has worked with children, adolescents and adults experiencing a diversity of challenges, including anxiety, depression, trauma, chronic pain, ADHD and learning difficulties. He has trained at the Western Sydney University Psychology Clinics and the Royal North Shore Hospital.

​Andrew has a special interest in providing psychological interventions for individuals and families experiencing anxiety and work/study stress. He has published research in the area of meaningful work and leadership.


Provisional Psychologist

Simone Soliman

BSC (Psych) | GDip AdPsych | MMP

Simone has completed a Bachelor of Science (Psychology) with MQ, Graduate Diploma of Psychology Advanced (Honours equivalent) with Monash University and Masters of Professional Psychology with the University of New England. She has been a dedicated student in order to practice in the area of psychology, which she is greatly passionate about.

Simone's area of passion is to work with children, teenagers and parents. She has previosuly worked in many roles involving teaching and coaching children. She is trained in modalities of CBT and ACT, including, Zones of regulation, Cool Kids, ACT for Children, Managing risk. She is also an importment member of testing clinic, trained in assisting with Cognitive assessments.

Simone has always found the brain fascinating and has enjoyed learning the different components of psychology which makes each and every one of us so different and unique.

By personality, Simone is highly personable, fun, caring and compassionate. She loves cooking and shopping in her spare time and regularly practices self-care, by attending the gym.

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Registered Psychologist

Khalil Dolatyar

Bsc (Psych)| Grad Dip | Msc | PhD (candidate)

Khalil is a Registered Psychologist who has completed his training in Australia. He is also a currently PhD candiate at UTS. He has extensive experience working in private practice and prior to training as a Psychologist, he worked in the corporate sector, spanning over a decade. 

Khalil works across children, adolescents, families and adults, who present with a diverse array of psychological issues. 

Khalil addresses a wide range of presenting issues such as anxiety, mood disorders, ADHD, Autism, relationship challenges, OCD, ODD, workplace stress, as well as life stressors. He also can see any workcover referrals.


Provisional Psychologist

Ishan Narendran

Bsc Psch (Syd Uni)

Ishan is a dedicated and compassionate psychologist committed to guiding individuals on their path to mental well-being and personal growth. With a Bachelor of Science (First Class Honours in Psychology) from the University of Sydney, Ishan brings a solid foundation of knowledge and a passion for understanding the intricacies of the human mind.

One of Ishan’s defining qualities is his warm and caring personality. Ishan approaches his clients with genuine compassion and a non-judgmental attitude, creating a safe space for them to explore their thoughts and emotions. His ability to empathise and connect on a personal level fosters a therapeutic relationship built on trust and understanding.

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