Dr Ian Johnston


  • Fee assured

Specialises in

  • Endoscopy
  • Inflammatory bowel disease

About me

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 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.

Areas of interest

Gastro-oesophageal reflux disease (GORD); Inflammatory Bowel Disease (IBD); Irritable Bowel Syndrome (IBS); Bile Acid Diarrhoea; Nutrition

Medical secretaries

About me
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Consultant's practices
Information for healthcare professionals

Information for healthcare professionals (Bupa patients only, last 12 months)

Procedures completed

  • G6500

    Diagnostic oesophago-gastro-duodenoscopy (OGD) includes forceps biopsy, biopsy urease test and dye spray - (5-50)

    BMI The Clementine Churchill Hospital (1-5) Northwick Park Hospital (1-5)

  • G8082

    Diagnostic oesophago-gastro-duodenoscopy (OGD) and immediate colonoscopy includes forceps biopsies, biopsy test and dye spray (as sole procedure) - (1-5)

    BMI The Clementine Churchill Hospital (1-5)

  • H2502

    Diagnostic flexible sigmoidoscopy (including forceps biopsy and proctoscopy) - (1-5)

    Northwick Park Hospital (1-5)

  • H2002

    Diagnostic colonoscopy, includes forceps biopsy of colon and ileum - (1-5)

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