Sundarason Rajaratnam practices at Hair Restoration & Aesthetic Clinic in Orchard, Singapore and Medora Clinic & Surgery in Paya Lebar, Singapore. He completed MBBS from University Of Melbourne in 1956,FRCS - General Surgery from Royal College of Physicians and Surgeons (RCPS), Glasgow in 1964 and FRCS - General Surgery from The Royal College of Surgeons (RCS), UK in 1965.