Dr. Constantinos Simillis

Consultant General and Colorectal Surgeon

Advanced Minimally Invasive Surgery, Laparoscopic and Robotic Surgery

BSc(Hons), MBBS(Lond), AICSM, PGCert, MRCS(Eng), MA, MD(Res), CCT(UK), FEBS(Coloproctology), FRCS(Gen Surg), FACS

Dr Simillis is a Consultant General Surgeon with further subspecialist training in Colorectal Surgery and Advanced Minimally Invasive Surgery (Laparoscopic and Robotic Surgery). He completed 18 years of medical training in the UK and has been working as a Consultant surgeon in major teaching University hospitals in the UK, where he acquired the necessary skills and knowledge to provide patients with the highest quality of care. He specialises in abdominal and gastrointestinal surgery, oncological surgery for early or advanced and recurrent colorectal cancer, inflammatory bowel disease, diverticular disease, gallbladder surgery, hernia surgery, proctology and emergency and trauma surgery.

Dr Simillis qualified in medicine with MBBS from Imperial College London in 2005, where he also achieved a BSc in Surgery and Anaesthesia with First Class Honours. He completed his speciality training in General Surgery and Colorectal Surgery in the prestigious North West London surgical rotation and worked in some of the leading university teaching hospitals in the UK. He undertook subspecialty training in advanced colorectal cancer at the world-renowned St Mark’s Hospital and The Royal Marsden Hospital. After completion of his speciality surgical training, he was awarded Certificate of Completion of Training (CCT) by the UK General Medical Council (GMC). 

He is proficient in advanced minimally invasive surgery, including laparoscopic and robotic surgery. He was highly ranked for his minimally invasive skills during his specialty training in London, on multiple occasions.  In addition, following a rigorous pan-European selection process, he was awarded the European Society of Coloproctology (ESCP) Colorectal Robotic Surgery Fellowship. He is an accredited endoscopist by the UK Joint Advisory Group (JAG), in both upper (gastroscopy) and lower (colonoscopy) gastrointestinal endoscopy. 

He was appointed as a Consultant Colorectal and General Surgeon at the teaching hospital of the University of Cambridge, Cambridge Colorectal Unit, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust. Following completion of competitive examinations he was awarded with Fellowship of the Royal College of Surgeons (FRCS) of England, Fellowship of the European Board of Surgery (FEBS), as well as Fellowship of the American College of Surgeons (FACS). He is a Member of the Association of Coloproctology of Great Britain and Ireland (ACPGBI), Member of the European Society of Coloproctology (ESCP), Member of the European Society of Surgical Oncology (ESSO), and Member of the American Society of Colon and Rectal Surgeons (ASCRS). 

He has been awarded a Doctorate in Medicine from University College London for his research into the optimal surgical management of colorectal cancer liver metastases. He has a strong interest and knowledge of evidence-based medical practice demonstrated by a Postgraduate Certificate in Evidence-Based Healthcare from University College London. He has also completed a Master’s Degree in Healthcare Ethics and Law, at Manchester University, School of Law, which provided him with in-depth analysis and extensive understanding of every day moral and legal issues faced by a surgeon. 

He is an active member of the Cancer Research UK, Cambridge Centre. He is an Honorary Clinical Senior Lecturer at the Department of Surgery and Cancer at Imperial College London. He has been the primary supervisor of undergraduate and postgraduate students. He has an impressive academic record and has published extensively in the scientific literature with over 100 peer-reviewed international journal publications and book chapters, and with over 4000 citations. He has given numerous national and international presentations at scientific conferences, and he acts as a reviewer for several high-impact peer-reviewed journals.

Dr Simillis undertakes consultations and performs surgeries in Cyprus at the new state-of-the-art operating theatres of Nicosia Polyclinic.



Professional memberships

• Fellow of the Royal College Surgeons of England (FRCS)

• Fellow of the European Board of Surgery (FEBS)

• Fellow of the American College of Surgeons (FACS)

• Member of the European Society of Coloproctology (ESCP)

• Member of the European Society of Surgical Oncology (ESSO)

• Member of the American Society of Colon and Rectal Surgeons (ASCRS)

• Member of the Association of Coloproctology of Great Britain and Ireland (ACPGBI)

• Member of the Association of Laparoscopic Surgeons of Great Britain and Ireland (ALSGBI)

• Member of the British Medical Association (BMA)

• Member of the Cyprus Medical Association (CYMA)

• Member of the UK General Medical Council (GMC)

• Member of the Cyprus Medical Council

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Conditions treated

Colon cancer

Rectal cancer

Advanced or recurrent cancer requiring multiorgan resection and pelvic exenteration

Complex pelvic surgery

Small bowel cancer, intestinal cancer

Inflammatory bowel disease

Ulcerative Colitis

Crohn’s Disease

Ileoanal pouch

Diverticular disease 

Small bowel disease

Colorectal polyps, polypectomy

Transanal minimally invasive surgery (TAMIS) for rectal tumours

Acute appendicitis, appendiceal tumour 

Abdominal surgery

Gastrointestinal surgery

Intestinal obstruction

Intestinal perforation

Acute abdomen and Peritonitis

Trauma surgery

Abdominal pain


Obstructive defecation syndrome

Faecal incontinence

Stoma surgery (stoma formation, stoma reversal, stoma revision)

Gallbladder surgery, laparoscopic cholecystectomy

Hernia surgery, open or laparoscopic hernia repair

Complex abdominal wall hernia surgery

Skin lesions removal and biopsy

Haemorrhoid treatment

Anal fissure treatment

Anal fistula treatment

Anorectal abscess

Anal pruritus treatment

Rectal prolapse surgery

Pilonidal surgery