THE TEAM
let the expert team help
The team at Principle Four Osteopath have a combined experience of over 35 years. Rest assured no matter who your consult is with, you will be in the best of hands.
HEATH WILLIAMS
Occupational health osteopath (tilted) / Strength and conditioning coach
Heath graduated from Victoria University in 2003 with a bachelor clinical science and master’s in health science (osteopathy).
Since then he has had a varied work career in the health and wellbeing space. Travel and continued education have seen him lecture at the British School Osteopathy, London School Osteopathy, Victoria University and Southern Cross University within the osteopathy departments. Teaching roles have included 9 years teaching exercise rehabilitation, 5 years ergonomics and 13 years clinical education. IN addition to this Heath also teaches post graduate training to health professionals in office and vehicle ergonomics, manual handling training and strength and conditioning.
Heath has worked extensively in the occupational health and safety industry, firstly with Health Response UK in London and now with Corporate Work Health Australia. He is experienced in the fields of office and vehicle ergonomics, tasks analysis, manual handling risk assessment training.
Heath is one of only a handful of osteopaths who have been awarded the title advanced occupational health osteopath (vocational) by osteopathy Australia.
Heath is also certified as a Level 2 strength and conditioning coach (Australian Strength and Conditioning Association), Level 1 tactical strength and conditioning coach (Australian Strength and conditioning association), FMS and SFMA certified (Functional Movement Systems) and Certificate of Applied Functional Science (Gray Institute).
SHAUN COGHLAN
Occupational health osteopath (titled)
Shaun completed his Bachelor of Science (Clinical Science) and Masters in Osteopathy at Victoria University.
Shaun’s practice style incorporates manual therapy-based treatment and has a particular interest in rehabilitation and promoting self-health and wellbeing through education and lifestyle changes.
Shaun also consults for Corporate Work Health Australia who specialise in workplace ergonomic assessments and education, and currently conducts ergonomic training and risk assessments across Melbourne.
Shaun is an avid basketballer. After playing for more than 15 years, including a tour of the USA, he moved into coaching in both junior and senior programs at the Blackburn Basketball Club.
Shaun has also previously worked as a sports trainer at the Whitehorse Football Club and has treated athletes at several other sporting events including netball and dodgeball.
Outside of work, you will find Shaun watching or participating in whatever sport is available, which often includes a round of golf with his mates or watching his beloved Collingwood Football Club.
Shaun is available for consultations at our Melbourne City CBD Clinic on Mondays and Wednesdays. When not working in the CBD, Shaun consults at The Osteopaths of Blackburn.
JARROD TESTA
Exercise rehabilitation osteopath (titled) / Ergonomic consultant
Jarrod graduated from Victoria University with a bachelor clinical science and master’s in health science (osteopathy). Jarrod has a strong interest in treating all musculoskeletal complaints in people of any age, whether that be the competitive athlete, weekend warrior, desk worker or TV enthusiast.
Outside of private practice, he enjoys weight training and competing in powerlifting, with an aspiration to teach rehabilitation to health practitioners in the future.
Jarrod also works for Corporate Work Health Australia Pty Ltd who specialise in workplace ergonomic assessments and education, and currently conducts ergonomic training and risk assessments across Melbourne.
Jarrod has undertaken the following studies that have provided the framework for building his interest in osteopathy and strength and conditioning/exercise rehabilitation:
- Bachelor of Clinical science, Master of Health Science (Osteopathy)
- Bachelor of Exercise and Sports Science
- Certificate 3 and 4 in Fitness
- JPS online mentorship for personal trainers
- Level 1 Strength and Conditioning – Australian Strength and Conditioning Association
LOGAN SHARROCK
Osteopath / Ergonomic consultant
Logan graduated from Victoria University with a Bachelor of Science (Osteopathy) and Masters in Health Science (Osteopathy).
Her journey into osteopathy was shaped by over 12 years competing in elite gymnastics, where she developed a strong appreciation for movement, injury recovery, and the value of skilled, empathetic healthcare. She combines evidence-based hands on treatment, exercise rehabilitation, and patient education to help people achieve their goals – whether that’s returning to sport, managing chronic pain, or improving everyday function.
Logan is committed to delivering care that is not only effective but also empowering. She believes long-term change comes from equipping people with the knowledge and confidence to take ownership of their health, ensuring they feel supported at every step of their journey.
Logan treats a wide variety of musculoskeletal injuries and has a keen interest in hip and pelvic pain, neck pain and shoulder complaints. She has gained experienced through being in private practice and on the field as a sports trainer for Caulfield Grammarians Football Club, strengthening her management of both acute and chronic injuries.
Outside of the clinic, you will find Logan at the gym or relaxing in the sunshine reading a book. You will never find her without one in her hand.
