Catina Bernardis studied medicine at Charing Cross and Westminster Medical School and obtained a BSc in physiology and biochemistry, graduating as a doctor in 1989.
She subsequently completed her plastic surgery training in The Pan Thames Training Scheme in London, working as a plastic surgery registrar at St Thomas' Hospital, London, The Queen Victoria, East Grinstead, and St George's Hospital, London. She was awarded the Specialist Fellowship in Plastic Surgery (FRCS Plast) in 2002.
After completing her training, Catina spent two months in Ganga Hospital in Coimbatore, India, undertaking a fellowship in trauma reconstruction. She subsequently spent time at the Royal National Orthopaedic Hospital, Stanmore, gaining experience in surgery for traumatic brachial plexus injuries. In addition, she undertook Fellowships in hand surgery at the Hand Clinic in Windsor, and Aesthetic Surgery at The Wellington Hospital, London.
Catina worked as a Locum Plastic Surgery Consultant at The Norfolk and Norwich University Hospitals for four months, and at The Radcliffe Infirmary, Oxford, for six months. Thereafter, she was appointed to a substantive consultant post at Guy's and St Thomas' in 2005.