Our approach is to deliver the best service every single time you visit us at Shire Doctors and Dentists. We have brought together a highly experienced and very passionate team who share the same vision towards healthcare and patient wellbeing.


Dr Maz Gorjipour
Medical Director

After graduating from UTMS in 2001, I have been practicing medicine for almost twenty years. I am currently practicing as an emergency medicine specialist in Sutherland and Liverpool hospitals. I have special interest in geriatric medicine, cardiology, trauma, and point – of – care ultrasound. Practicing as a GP and an emergency medicine specialist provided me with a great opportunity to understand the value of high-quality primary care services. My focus at Shire Doctors and Dentists is to offer a wide variety of services to address a broad range of medical and health related issues helping avoid unnecessary hospital admission where appropriate.

Dr John Rizzuto
Principal Medical Practitioner

I graduated from the University of Sydney in 1975, then followed three years of hospital residency at Concord Repatriation General, Prince of Wales, Bankstown, Westmead and Sutherland Hospitals. 

managed my well respected and accredited solo family medical practice in South Hurstville for over 40 years. My medical interests include general medicine, paediatrics, nutritional medicine and preventative health.

My wife and I raised and educated our now adult children in the Sutherland Shire and we both still enjoy the outdoor activities on offer here – the beach and the bush, swimming, surfing and walking.

Dr Reinier De Villiers
General Physician

I graduated from the University of Pretoria, South Africa in 1987. I moved to Australia in 2008 and attained full Australian specialist family physician registration in 2012. I practised as a GP proceduralist until 2015 in Narrogin, WA and have extensive experience in obstetrics, anaesthetics, and emergency medicine. I moved to the Shire in 2016 and have been practising in South East Sydney as a GP since then. I enjoy all aspects of general practice and my major interests are ear, nose and throat, orthopaedics (sports medicine) and obstetrics (ante – natal, post – natal and shared care, implanon and mirena insertion and removal) When I am not attending to my patients, I am spending time with my wife and children. I have a passion for music, wine and travel.

Dr Lana Celi
General Physician

Prior to completing my medical degree in 2013, I completed a Bachelor of Health Science at the University of Wollongong. I have a certificate in Women’s Health provided by The Royal Australian and New Zealand College of Obstetricians and Gynaecologists.

I have special interest in family medicine and women’s health. 

I grew up in the local area and continue to live locally. I have two children and in my spare time I like to water-ski and swim.

Dr Koonal Prasad
General Practitioner/Cosmetic Physician

I thank this practice for welcoming me into the family.

My principal interests lie in being a Aesthetic/Cosmetic Physician and a Sports Physician. I believe that beauty and confidence need to radiate from the inner and outer self. Thus Cosmetic practice for me is an integral part of Holistic care in General Practice. However preventive and General Medicine will always be the cornerstone of how I practice.

I graduated with distinction in Medicine from the University of Notre Dame Australia in 2015. As a Junior Doctor, my focus was heavily on Surgical terms.Thereafter, I initiated and complete my General Practice Training under the RACGP successfully in 2020, while spending time as an unaccredited Orthopaedic trainee.

I currently am the managing Physician for the Canterbury Bulldogs Harold Mathews NRL team.

There was a life before Medicine for me, as I graduated from University of Sydney with a Bachelor of Orthoptics and practised in Ocular pathology management.

Away from Medicine,  I am an avid fan of the NRL, Cricket and all things Vehicles/Autostyling related. I also look forward to rekindling my love with my guitar. I am also learning to embrace the shire life with a passion!

I look forward to assisting you in achieving the best version of yourself.

Dr Yasmine Mohamed
General Physician

I graduated with the Bachelor of Medicine and Surgery from Alexandria University in 2010. Following migration to Australia, I continued practising medicine as the obstetrics & gynaecology and emergency medicine SRMO in the Nepean Blue Mountains Local Health District and at the Cairns Hospital. I then moved to Illawarra Shoalhaven Local Health District as an emergency registrar. With the extended experience in women’s health and critical care medicine, I then decided to join the RACGP fellowship training program which I completed in 2021.

My medical interests include women’s health, antenatal care, postnatal care, breastfeeding consult, family planning, contraception counselling and preventive medicine. Besides being a doctor, I am a full-time mum of a lovely 7-year-old boy and I enjoy the beach and nature more than anything else in my life. I have a passion for photography and dream about travelling around the world with my son.

Dr Dien Nguyen
General Physician

I graduated from the University of Sydney. I then continued my training at Westmead Hospital and the Children’s Hospital at Westmead during my residency. Following completing my residency program, I joined the Royal Australian College of General Practitioners (RACGP). I completed the specialist GP training program and received the fellowship of RACGP in 1998.

I have special interests in paediatrics, preventative medicine, and the management of chronic illnesses. With my comprehensive experience in practicing as family physician, I enjoy assisting my patients in management of all their general health and medical issues.

Dr Yana Martynova
General Physician

Having graduated as a medical doctor in 1995 in Russia, she specialised in respiratory medicine and cardiology before moving to Australia in 2005.

With extensive experience working in Sydney-based and rural hospitals, emergency departments and General Practices, Dr Martynova is particularly interested in internal medicine, elderly care, paediatrics, women’s health and family planning. She believes that patient education, preventive care and a holistic approach to complex conditions are the key to successful treatment.

Outside of work Dr Martynova enjoys experimenting around the kitchen with various international cuisines, confectionary, chocolate craft and baking. She also enjoys tailoring, being keen to discover and design new garment patterns.

Dr Christene Mikhail
General Physician

Dr Christene Mikhail studied medicine at The University of Newcastle after completing her master’s degree in Pharmacy at The University of Sydney. She trained at St George and Sutherland Hospitals as JMO and works as a Casual CMO at Calvary Health Care. She previously worked as an academic for ten years at The University of Sydney, both tutoring and lecturing in anatomy.

Dr Mikhail is very dedicated to her career in medicine and has a strong passion for helping her patients. She has a special interest in Women’s health, general medicine, chronic disease management and preventative medicine.