Dr. Sebastian Mafeld is a Vascular & Interventional Radiologist at University Health Network (UHN) and Mount Sinai Hospital in Toronto, Canada. He works within a team to provide vascular and non-vascular minimally invasive procedures involving: Aortic and Peripheral Arterial Interventions, Balloon Pulmonary Angioplasty, Dialysis access, Embolization, Hepato-Biliary/Urological Intervention, Interventional Oncology and management of venous disease. He also reports vascular imaging studies including CT, MRI and Ultrasound.

Dr. Mafeld is active in multiple clinical trials, and the education of fellows, residents and medical students. He also has an interest in endovascular simulation. A list of Dr. Mafeld's publications can be found here.

He serves on the editorial board for The Canadian Association of Radiologists Journal and is a reviewer for several other journals.