Dr Gunathilake is an experienced Geriatrician and General Physician, who provides quality care for the people of Newcastle and Lake Macquarie. His special interests include acute care of unwell older persons, cognitive disorders, falls, and perioperative medicine.

Dr Gunathilake completed dual training in General Medicine and Geriatric Medicine at the John Hunter Hospital and obtained his fellowship with the Royal Australasian College of Physicians in 2015. He currently holds a public appointment at the John Hunter Hospital as a Staff Specialist and is also a Conjoint Lecturer at the University of Newcastle.

Dr Gunathilake has received a number of national and international awards and scholarships, including the prestigious Tony Broe award in Geriatric Medicine (ANZSGM, 2014), IMSANZ advanced trainee travelling scholarship (2013), and the American Academy of Dermatology World Congress Fund travel fellowship (2008). He has a strong research background, furthered by working as a postdoctoral fellow in the University of California San Francisco between 2007 and 2009, and has published widely in peer-reviewed journals.

Dr Gunathilake provides in-patient services at the Lake Macquarie Private Hospital for patients admitted via the Emergency Department and also provides geriatrician consultation services at the Lake Macquarie Private Hospital Specialist Centre.