Executive Team

Sonic Core Values

Sonic’s Core Values were created by our staff more than 20 years ago, and act as guiding principles for how we conduct ourselves as an organisation.


SHL Core Values 2020 RGB

Our Core Values set the standard for the collegiate and supportive way in which we behave towards one another, as well as the professionalism with which we conduct ourselves in our day-to-day duties. Individually, our Core Values articulate our commitment to medical excellence. Collectively, they empower our people to deliver exceptional medical services to doctors and patients. 

Since their inception, Sonic’s Core Values have been embraced by Sonic Healthcare staff around the world as a unifying code of conduct. 

Chief Executive Officer

Alistair graduated in medicine from the University of Sydney in 1982. He started his anatomical pathology training at the Children's Hospital Camperdown and completed it at the Royal North Shore Hospital.

Before joining the practice in 1990 he was Staff Specialist (histopathology/cytology) at Royal Prince Alfred Hospital. Alistair is now a Fellow of the International Academy of Cytology, and a member of the Australian Society of Cytology, the Australian Society of Dermatopathology and the Australian Dermatopathology Slide Club. Alistair has been involved in postgraduate teaching of cytology and was one of the conveners of the "Too Hard" teaching sessions for pathology registrars at the University of Sydney.  Alistair is an assessor for the National Association of Testing (NATA) and regularly audits laboratories for accreditation.  He is also the chairperson of the Anatomical Pathology Advisory Committee of the RCPA. Alistair's special interests include gastrointestinal, skin and urologic pathology.

In 2016, Alistair took up the position of Department Head Anatomical Pathology SydPath at St Vincent’s Hospital.  In this role, Alistair was responsible for the management of the department ensuring that the needs of the patients, referring doctors and hospital were met.  He was predominately involved in the Melanoma & Skin Cancer, Urology and Head and Neck multi-disciplinary meetings.  Alistair was also involved with the Garvan Institute and Kinghorn Cancer Centre in relation to Molecular Pathology Research and tumor banking from surgical and autopsy cases.

Dr Lochhead is a Clinical Associate Professor at the University of Wollongong and returned to work Southern.IML Pathology in August 2020 as the Medical Director.  In September 2021, Dr Lochhead was appointed to the position of Chief Executive Officer at Southern.IML Pathology.

Laboratory Manager

Ms Ranjeni Rajah has worked as the Laboratory Manager for Douglass Hanly Moir at St George Private & Hurstville Community Private Hospital.  Ranjeni's qualifications, experience and role as a NATA assessor provides a solid foundation for the maintaining of the very high standard of quality testing and service levels provided by Southern.IML Pathology.

Business Development & Patient Services Manager

Narelle McCann worked for Macquarie Pathology as the Wollongong Branch Manager for many years gaining experience in all areas of providing a pathology service.  Narelle also took on the role of Manager for their Southern Highlands and Southern Sydney branches.  Narelle joined Southern.IML Pathology and continues to focus on the development of the practice with a strong focus on patient services.