ALERT: If you have a fever, cough, sore throat or shortness of breath and you have travelled, please contact us via phone prior to making a booking or visiting the medical centre.

Mount Isa
GP Super Clinic

Our Team

Our general practice team are highly trained in their chosen medicine discipline. By focusing on general practice health our doctors are able to provide individualised care to the patients they see daily. Offering a completely holistic service, our doctors are both passionate and highly trained to care for you and your family.

Dr Cielo Marquez-Doyle

Medical Practitioner

Dr Marquez has over 10 years experience in medical practice in the Philippines and Australia, covering a range of clinical roles and settings from primary care through to tertiary hospitals. Dr Marquez has worked with Sonic Health Plus since 2013 and has a special interest in Women’s Health and Children’s Health.

When she is not working Dr Marquez enjoys cooking, travelling and spending time with her family and friends.

Dr Daniel Galdau

General Practitioner

Dr Galdau was born in Romania and grew up in Brookly, New York. He served in the US Navy before study anthropology and finance and then attending Medical School. After Medical School, Dr Galdau worked in Urgent Care, General Practice and Skin Cancer clinics.

Dr Galdau has worked with Sonic HealthPlus since 2018 and has a special interest in Occupational Health and Skin Cancer. In his spare time, he enjoys quad biking and jet skiing.

Dr Christopher Sadler

General Practitioner

Dr Sadler has a special interest in Diabetes, Internal Medicine, Renal and Paediatric fields. He has taken additional studies in Endocrinology and Internal Medicine and has additional qualifications in paediatrics with a Diploma of Child Health. When not at work, Dr Sadler enjoys spending time with his young family. 

Amber Treneman


Amber commenced with Sonic HealthPlus as a Clinic Administration Officer in 2014 and has been in the 2IC position since 2016. Amber excels in areas such as administration, customer service, trouble shooting and enjoys developing her supervisory skills.

Amber enjoys working in a team environment and interacting with staff and patients. When Amber is not working she enjoys cooking, motor cross and spending time with her family and friends.

Shellie Greber

Registered Nurse - Chronic Disease Management

Shellie has 5 years' experience in nursing with a background in dialysis. She commenced with Sonic HealthPlus in early 2018. Shellie is passionate about chronic diseas management with a particular interest in diabetes. In her spare time, she enjoys spending time with her dog, family and friends, cooking and going out on the lake for BBQ's.

Suzanne Burton

Endorsed Enrolled Nurse

Suzanne has been working with Sonic Health Plus as an Endorsed Enrolled Nurse since 2008. Most of the time she can be found in the clinic’s busy treatment room helping our patients. Suzanne enjoys assisting the doctors, immunisations and has a special interest in wound care.

When she is not working Suzanne enjoys spending time with her family and friends, health and fitness and riding her horse.

Josephine Noble

Clinic Administration Officer

Josephine has been with Sonic Health Plus in the role of Clinic Administration Officer for over seven years. Josephine offers excellent front line customer service to our clinic and has extensive knowledge in regards to the services we offer.

Josephine enjoys being able to interact and help our patients on a daily basis in her role with Sonic HealthPlus. When she is not working, Josephine enjoys gardening, camping and spending time with her family and friends.