St Mark's HospitalLondon North West Healthcare

Dr Ian Johnston MBChB MD MRCP
Consultant Gastroenterologist

Ian Johnston gained his medical degree from the University of Edinburgh in 2002. He moved to London to continue his medical training and was awarded membership of the Royal College of Physicians in 2005. He performed his Gastroenterology Specialty training in London working at St George’s, Hammersmith and St Mark’s Hospitals in addition to several District General Hospitals. He completed his training in 2014 and took up his substantive Consultant position at St Mark’s in January 2015.

He was awarded his MD by Imperial College London based on research into Bile Acid Diarrhoea. His work has been presented at National and International meetings at which it has been awarded prizes. As part of this research he set up and ran a drug trial, the results of which have been published in peer reviewed journals. He continues to contribute to Bile Acid Diarrhoea and IBD research.

His main in-patient work at St Mark's involves management of nutrition in medical and surgical patients as well as the acute management of Crohn's and Colitis. Out patient work covers Nutrition, Inflammatory Bowel Disease as well as Irritable Bowel Syndrome and Reflux Disease. He performs upper and lower GI endoscopy in the investigation of these conditions.


St Mark’s Hospital:

Name: Rose Gonzalez
Tel: 020 8235 4105 

Central Middlesex Hospital:

Name: Dawn Melbourne
Tel: 020 8453 2205

Private referrals:

Name: Ann Dickinson
Tel: 07305 836178

Dr Ian Johnston Consultant Gastroenterologist

Dr Ian Johnston
Consultant Gastroenterologist