Independent Medical Practitioners
Dr Gayathri Ganeshananthan
Dr Gayathri (Gaya) Ganeshananthan has been practicing medicine for over 20 years. In that time, she has had experience in various fields of medicine. She spent six years working in emergency and critical care medicine in various hospitals across New South Wales, and has confidence and experience with a variety of acute medical presentations in addition to having exposure and experience in many other areas of medicine, which includes women’s health, paediatrics, chronic health care and general medicine. She trained in general practice and received her fellowship from the Royal Australian College of General Practitioners. She also has a diploma in child health from the university of Sydney. She is passionate about primary care medicine. During her free time Gayathri enjoys reading, gardening, travelling, and spending time with her family.
Dr Ernest Rust
Dr Rust has been caring for patients in this practice for over thirty years. The level of care, dedication and time devoted to them by him, is much valued by his patients and their families. His interests in medicine are varied and he sees a wide range of age groups and conditions. He has many interests outside of medicine which includes food, music, art and photography. He is an extremely talented and gifted photographer, whose work is often exhibited in many of the local events.
Dr Anthony O’Halloran
Dr O’Halloran has been working in West Pennant Hills for 35 years and has been involved in all areas of general practice, providing care for all ages from children right up to the older patients. He has looked after three generations of many local families who value his punctuality and reliability. Dr O’Halloran is actively involved in the Ku-ring-gai District Medical Association.
Dr. Pooja Sarangam
Dr. Pooja Sarangam is from India and has worked in various hospitals across Australia since 2015 and has exposure to a wide variety of specialities.
Dr. Sarangam has been working as a GP in the Illawarra since 2022. She has an interest in all aspects of General Practice and believes in a holistic approach to patient care.
In her free time Dr. Sarangam enjoys a good book, playing with her dog Bobo and spending time with family and friends.
She speaks fluent English, Telugu and Hindi.
Dr. Sarangam will consult at The Haven on Tuesdays and Fridays.
Ian Koh
Ian is a psychologist with 14 years’ experience in a wide variety of settings, such as common psychological disorders, management of alcohol and substance use, anger management, relationship problems and many other common mental health concerns. Ian has worked with a diverse group of patients from varied cultural backgrounds. Ian uses a strength based and compassionate approach when dealing with all of his patients. Ian is an AHPRA registered psychologist and has completed postgraduate studies in psychology and counselling. He is also actively involved in teaching and higher education.




