Qualified, Experienced, Authentic and Compassionate Team

The experienced team at Windsor House Private

We are a clinical team. We work together. We respect each other. We respect you. We are qualified, experienced, authentic and compassionate. We are solution focussed and use an integrated and evidence based approach to best practice AOD therapy which is trauma informed.
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OUR TEAM

Meet the team

Paul McDonnell
Program Director, Co-Founder / Dip (MHAOD) Dip Coun

Paul is one of Australia's leading group therapists in the AOD sector. For 15 years he has worked for and managed best practice organisations in the field, including private and public hospitals and tertiary care environments. Paul has been sober for almost two decades. He uses his clinical expertise and empathy to help clients realise their potential.

Amanda McDonnell
Dip Comm Services (case management), GradDip Couns, MCouns (current)

Using her unique life and recovery experiences combined with continued commitment to further education and clinical development, Amanda can understand and respond to your needs with empathy and understanding. Amanda’s holistic approach involves fostering principles of curiosity, self-acceptance, wisdom, and empowerment, and her warm and engaging nature will make you feel safe, heard, and capable, allowing you to build resilience and move towards a life free of the maladaptive behaviours associated with substance use.

William Pausewang
General Manager,Co-Founder, Director

Will brings a wealth of lived experience to his role, both as a former worker and as someone recovery. Having worked and personally undergone treatment in numerous centres across Australia and overseas, he developed a deep understanding of what truly supports lasting recovery. Drawing on his background in Business Management and Communication Design, Will co-founded the organisation with Paul to create a supportive, resident-focused treatment model grounded in the proven principles of the therapeutic community approach. His passion lies in fostering a safe, nurturing environment where individuals are empowered to heal and grow.

Marnie McDonald
Counsellor / Cert IV (MHAOD), B.A, Grad Dip (Comm)

At the heart of Marnie’s therapy ethos is connection, community, compassion and empathy. Marnie’s unconditional positive regard, clinical experience and consistent presence provides her clients with a safe space to heal. Researching and implementing neuroplasticity into her practice along with an unwavering ethical focus helps empower clients.

Steve Lemmens
Counsellor / BBus / Dip Counselling (Current)

Steve’s personal experience in therapeutic environments, has developed a passion to help recovering alcoholics and addicts find recovery. Through this experience and unwavering support, Steve guides residents toward recovery, offering practical strategies and genuine understanding. Steve has an extensive history in management, this aids in setting up practical and supportive solutions for residents once they leave treatment.

Adrian Miller
Personal Trainer & Counsellor


Adrian is a qualified Personal Trainer with over 10 years of experience, specialising in holistic health and recovery. He integrates Qi Gong and other energetic modalities to support healing, particularly for those overcoming addiction. With lived experience in recovery, Adrian brings deep empathy and understanding to his work. He has completed counselling training and now works as a counsellor at Windsor House Private, combining movement, mindfulness, and therapeutic support. Adrian’s unique blend of skills offers a compassionate, body-based approach to recovery and wellbeing, helping clients reconnect with themselves and build lasting, healthy change.

Darren Cowell
Counsellor & Breathwork Coach

Darren brings a wealth of life experience to his work, having served in the military, worked as a police officer, and competed in Ironman events around the world. His journey through personal recovery has deeply shaped his passion for supporting others on their healing paths. Darren is currently training as a counsellor, combining his resilience, discipline, and empathy to guide others through recovery. He is also a qualified breath work instructor, harnessing this powerful and increasingly recognised modality to support emotional regulation and long-term healing. Darren’s grounded, strength-based approach inspires trust, connection, and transformation.

Peter Harvey
Psychologist / GradDipPsych / MPsych / MAPS

Peter brings a wealth of experience both professionally and personally. He has worked across a number of public and private AOD programs. He has been in recovery himself for over a decade and also runs his own private practice. Peter uses a range of therapeutic modalities to help his clients build their self awareness and increase their emotional capacities. This includes an understanding of how unhelpful coping mechanisms ultimately keep us stuck in self defeating negative patterns such as addiction. Peter finds that through the therapeutic conversation, a person can uncover the story of who they are and begin the process of making more helpful and life affirming choices for themselves. Being part of the healing journey for those in addiction is the reason he became a psychologist.

Leo Cullen
Psychologist

Leo is a highly experienced psychologist who has worked across a range of treatment centres and therapeutic settings throughout Melbourne. His work is grounded in a rich academic background and a deep commitment to personal and social transformation.
Leo holds a BA in Philosophy and Sociology, a BD in Spirituality, and multiple postgraduate qualifications, including:
Postgraduate Diploma in Humanities (Counselling)
Postgraduate Diploma in Chemical Dependency (Alcohol & Drugs)
Postgraduate Certificate in Family Violence Studies
Master’s Degree in Psychology
Leo brings a thoughtful, compassionate, and evidence-based approach to supporting individuals through complex emotional and behavioural challenges.

What we stand for

Our Core Values

Accessibility
Healthcare should be available to everyone, anytime, anywhere.
Personalization
Your health journey is unique, and we tailor our care to suit your individual needs.
Empathy
Compassionate care is at the core of everything we do.
Innovation
Using advanced technology to deliver seamless and effective healthcare solutions.
Preventative Care
We focus on proactive measures to keep you healthy and thriving.
Collaboration
We partner with you and your care team to ensure the best outcomes.
Our mission

Better Health, Simplified

We’re here to put you in control of your health journey with innovative tools, compassionate care, and a commitment to excellence.