Dr. Sebastian Cook
Principal Chiropractor
Dr. Sebastian Cook, founding chiropractor of Seriously Chiropractic, was raised in the Macarthur region and has always felt a strong calling to serve the community he proudly calls home. From an early age, he was driven by a desire to help others and contribute meaningfully to their health and wellbeing.
He completed a Bachelor of Medical and Health Sciences at University of Wollongong in 2014, followed by a Master of Chiropractic at Macquarie University in 2017. In 2018, Dr. Sebastian began practising in Campbelltown, where he developed a clinical approach centred on personalised, patient-focused care. He is committed to taking the time to listen, understand each individual’s story, and tailor treatment plans to support long-term health outcomes, not just symptomatic relief.
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“Since beginning practice, I’ve come to deeply respect how frustrating it is for patients to feel unheard, especially when it comes to their health. My goal is to ensure every person feels listened to, understood, and supported.”
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In 2019, Dr. Sebastian joined the Chiropractic Department at Macquarie University, where he currently serves as a Senior Clinical Supervisor. This role allows him to mentor future chiropractors while staying closely aligned with the latest research, clinical standards, and evidence-informed practice.
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"“My greatest privilege as a teacher is giving back to the profession that has given me so much, sharing my own experience with students and helping them discover their own passion for chiropractic.”"
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Dr. Sebastian has presented at the Australian Chiropractic Association Annual Conference, hosted the Chiropractic Alumni Seminar Dinner, and volunteered internationally with Hands on India in 2025. He continues to serve on the organisation’s Board of Directors, supporting the organisation’s initiatives to continue provide chiropractic and health care relief to the underserved communities of the West Bengal region, fund primary schools, and empower both the women and men through health and education programs.
Locally, Dr Sebastian remains passionate about community education, taking part in spinal health talks in schools, promoting balance and strength programs for fall-prevention in retirement villages, and contributing to men’s mental health discussions at Men’s Shed groups across the region.
Outside the clinic, Sebastian, known simply as “Seb” after hours, embraces a balanced lifestyle that reflects the principles he teaches. He enjoys long-distance running, scuba diving, gym training, and skiing, and proudly identifies as an enthusiast of all things nerdy. Seb is known for his sense of humour and thirst for life, that encompasses the spirit of Seriously Chiropractic here in Oran Park.
Dr. Amelia Heasman
Associate Chiropractor
Amelia’s appreciation of chiropractic care began at a young age. Having suffered from migraines since the age of 10, she personally experienced the benefits of regular treatment. However, her decision to become a chiropractor came much later.
Amelia had dreamed of becoming a primary school teacher from the age of seven, but in Year 12 she experienced a change in direction after developing a strong interest in learning about the human body and how its systems work together. This newfound interest, combined with her personal experience with chiropractic care, inspired her to pursue a career focused on health, wellbeing, and helping others feel their best.
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Amelia loved her university studies completing both her Undergraduate Degree in Chiropractic Science and Masters of Chiropractic at Macquarie University in 2024. Her academic journey strengthened her passion for holistic health and patient centred care.
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She has since worked in clinics across North Rocks and Hornsby, where she is known for her warm, bubbly, and compassionate approach. Amelia’s care style is patient goal driven, focused on listening, and centred on achieving long-term outcomes. Her own positive experiences with chiropractic care allow her to connect deeply with patients and understand the impact that tailored treatment can have on quality of life. Her key areas of focus include holistic health, headaches, TMJ concerns, and children and teens.
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The year after graduating, Amelia began teaching in the Chiropractic Department at Macquarie University in 2025. She now teaches radiography in the Master’s program. Teaching allows Amelia to combine her love for teaching with her passion for healthcare, while supporting students throughout their studies and into their future careers.
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Outside the clinic, Amelia enjoys watching musical theatre, spending time at the beach, getting competitive over card and board games, dancing, playing netball, watching AFL (Sydney Swans), and listening to music. These interests help her maintain a balanced, active lifestyle that reflects the healthy habits she encourages in her patients.
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Dr. Amelia joins Seriously Chiropractic in 2026, as a vibrant and enthusiastic member of the team, who's passion for chiropractic education makes her one of the most exciting young chiropractors of the region.
