About Us

Founded in 1995 by Dr Katherine Bull, Optimal Care Chiropractic has been concerned with our patients health and vitality through diagnosis, treatment and prevention of disorders of the neuromusculoskeletal system and the effects of these disorders on general health

Optimal Care Chiropractic is staffed by fully qualified Chiropractors specializing in the Gonstead System of Chiropractic. We are dedicated to providing patients of all ages with professional and quality Chiropractic care.

So let's meet our staff

Dr Katherine Bull

Principal Chiropractor

As a 2nd generation Chiropractor I have been fortunate to have been a Chiropractic patient & observer most of my life. The fabulous health & well-being benefits I received & witnessed growing up inspired me to follow in my father’s footsteps & study Chiropractic.

I graduated with a Bachelor of Science degree majoring in Anatomy from Sydney University in 1994 & a Master of Chiropractic degree from Macquarie University in 1996.

I have been privileged to have spent many years studying & teaching closely with world-renowned Gonstead Chiropractors to continue refining my skills & proficiency using the Gonstead System of Chiropractic – which is, in my opinion, the benchmark in specific Chiropractic.

In August 1996 I opened my first Chiropractic clinic at 70 Pitt Street, Sydney…..the same building where our City practice is located today. I have been teaching Gonstead adjusting skills to Masters students at Macquarie University since 1999, as well as serving as an Executive Board Member & Treasurer of the Gonstead Chiropractic Society of Australia. In 2011 I opened our second practice in Seaforth on Sydney’s Northern Beaches.

I am passionate about providing quality Chiropractic & health care to everyone in our community &, with a pair of sports-mad children of my own at home, have a special interest in optimizing our body’s potential for performance & recovery while minimizing the potential for injury in young & developing athletes.

Christina Leach


After sustaining a whiplash injury at the age of 16 I decided to try Chiropractic to seek help, as both my parents were under Chiropractic care. My speedy recovery led me to embark on a path to learn and provide the same “type” of hands-on care to others.

I graduated with my Master of Chiropractic degree from Macquarie University in 1999 and received the award for 'Academic of the Year' at graduation. I am currently a member of the teaching staff at the Department of Chiropractic, Macquarie University, where I have tutored students in Gonstead Technique.

I specialise in the treatment of all spinal and joint related injuries utilising the Gonstead System of Chiropractic. The Gonstead System is often described as the gold-standard of Chiropractic techniques and utilises a very specific protocol to both analyse and treat the patient.

I have been fortunate to have had the opportunity to practice and gain experience in a number of practices both in Australia and overseas, including practicing for 5 years at the Gonstead Clinic UK in Harley Street, London.

With 3 beautiful boys of my own, I have a keen interest and wealth of experience in treating both the pregnant and paediatric patient.

Chiropractic has played a crucial role in providing natural support for myself, my husband and my 3 very active boys in our pursuit of optimal health.

Having known Katherine at University and for the years since, I am excited to add to her team of dedicated health professionals.