Mr Pasha Nisar

Consultant General & Colorectal Surgeon

MA (Cantab), MB BChir, DM, FRCS

Professional Membership

  • Fellowship of The Royal College of Surgeons of England
  • Association of Coloproctology of Great Britain
  • European Society of Coloproctology
  • Section of Coloproctology, Royal Society of Medicine
  • Alumni Trinity College, Cambridge University
  • Alumni Cleveland Clinic Foundation, USA

Clinical Interests

  • Groin and abdominal hernia surgery, laparoscopic and mesh free repair 
  • Advanced colonoscopy, EMR polypectomy, bowel cancer screening, screening for colitis
  • Keyhole surgery for bowel cancer and diverticular disease
  • Surgery for stage IV endometriosis
  • Laparoscopic rectopexy for prolapse
  • Sacral neuromodulation for faecal incontinence
  • Surgery for Crohn’s and colitis including ileo-anal pouch
  • Treatment for haemorrhoids, anal pain, fistula and fissures
  • Rafaelo, HALO surgery for piles and botox injections for pain

Personal profile

Mr Pasha Nisar FRCS, is a Consultant Colorectal and Laparoscopic (keyhole) surgeon and sees private patients at the Runnymede Hospital in Surrey and Princess Margaret Hospital in Windsor. He is the specialty lead for colorectal surgery at Ashford & St Peter’s Hospitals NHS Trust and was appointed as a consultant in 2011. He is an expert in minimally invasive surgery and performed the first single incision ‘scarless’ operation for cancer and the first artificial sphincter implant at the Trust. He established the colorectal research programme with Royal Holloway, University of London and supervises PhD studies on genetic biomarkers for colon cancer. He is also the clinical lead for endoscopy at Princess Margaret Hospital.

Mr Nisar grew up in Sunningdale and attended King’s College School, Wimbledon. He read medicine at Trinity College, Cambridge University and Addenbrooke’s. He was awarded a doctorate from The University of Nottingham for his thesis at the Academic Surgical Unit. Specialist surgical training was completed in the London Deanery including St George’s, Frimley Park, Royal Surrey Hospitals. Mr Nisar spent one year at the Cleveland Clinic USA, a world renowned centre of excellence, at the Department of Digestive Disease training under Professor Vic Fazio. 

Mr Nisar is a high volume surgeon with expertise in all aspects of colorectal disease, hernia repair and colonoscopy. His focus is on achieving the best clinical outcomes and excellent results for patients. He is an international conference speaker with over 50 articles and book chapters published. Mr Nisar was voted Global Health and Pharma Colorectal Surgeon of the Year 2019. 


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