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Dr Mark Donnelly

Consultant Physician & Gastroenterologist


Practices at: Thornbury Hospital

A photo of Dr Mark Donnelly

Personal Profile

Following his undergraduate training in Sheffield (Distinction in Medicine), and junior hospital jobs in Rotherham and Chesterfield, Mr Donnelly undertook post graduate training in Nottingham (including a period in full time research), London (the Hammersmith) and Sheffield.

His research was centred around the development of novel, safer non-steroidal anti-inflammatory drugs and the association of COX-2 with gastric cancer. Further exposure to advanced endoscopic techniques, including Endoscopic Mucosal Resection and Endoscopic Ultrasound. He was appointed as a Consultant gastroenterologist in Sheffield in 1999. Widely experienced general gastroenterologist with a specialist interest in endoscopy, especially colonoscopy.

Mr Donnelly performs advanced therapeutic colonoscopy and gastroscopy.

He's an accredited Bowel Cancer Screening Colonoscopist (one of four based in Sheffield), Bowel Cancer Screening Examiner

He is Clinical Director of the South Yorkshire and Bassetlaw Bowel Cancer Screening Programme.

Mr Donnelly sits on the Bowel Cancer Screening Assessment Board and is Professional Clinical Adviser for Colonoscopy to the Yorkshire and Humber Bowel Cancer Screening Programme.

He has national reputation within the Bowel Cancer Screening Programme with consistently excellent Key Performance Indicators Director, since 2001 of the Sheffield Endoscopy Training Centre – one of the original ten endoscopy training centres established 20 years ago.

Mr Donnelly has an International reputation in Endoscopy training, delivering courses in Copenhagen (Denmark), Ghent (Belgium),Khartoum (Sudan), Chennai (India) to name a few.

He also acts as Faculty on endoscopy courses throughout the UK including St Marks Hospital, Northwick Park, St Georges Hospital , London, Royal Liverpool Hospital etc Currently runs 10-12 hands on courses each year in Sheffield and has acted as faculty on over 200 such courses, training the next generation of endoscopists. Former member then secretary of the Endoscopy Committee of the British Society of Gastroenterology.

Me Donnelly convenes the Hands on Endoscopy Village at the British Society of Gastroenterology Annual Meeting.

Clinical Interests 

All aspects of luminal gastroenterology, including the investigation and management of dyspepsia/indigestion, altered bowel habit, irritable bowel syndrome, abdominal pain, iron deficiency anaemia, rectal bleeding Specific interests in advanced endoscopy and bowel cancer screening.

Professional Memberships

  • British Society of Gastroenterology
  • Royal College of Physicians