Dr Hajian is a Sydney-based vascular surgeon with interests in endovascular surgery. He is a member of the Royal Australian College of Surgeons and Australia and New Zealand Society for Vascular Surgery. Dr Hajian also has a PhD in vascular tissue engineering and designing new generation of biomaterials from the University of Sydney. He won the best trainee Research Prize in Australia and New Zealand during his training in 2016.

Hamid is an Australian trained vascular surgeon. As a specialist in vascular surgery, he is dedicated to providing high quality of care for patients with various acute and chronic conditions affecting the blood vessels and circulatory system. Dr Hajian has interests in providing minimally invasive interventions for patients with peripheral vascular disease, varicose veins, aneurysms and those who need access surgery for dialysis or chemotherapy.

Dr Hajian is employed as a vascular surgery consultant at Nepean hospital. He also has private clinical appointments at Dudley Private Hospital in Orange.