Por qué es un doctor de primer nivel/Professional statement/Perché è un dottore di prim’ordine

Dr John Martin graduated from Cambridge University and King’s College Hospital, London in 1990 and completed his gastroenterology training within North West London.  He is a highly-experienced gastroenterologist and endoscopist based in London and holds an NHS Consultant post at Imperial College (ICL).  He is an expert in colorectal cancer screening, therapeutic and diagnostic colonoscopy and has 25 years experience of managing all aspects of gastroenterology including abdominal pain or discomfort, reflux disease, diarrhoea and constipation, rectal bleeding, Irritable Bowel Syndrome, Crohn’s Disease and Ulcerative Colitis.

Dr Martin teaches colonoscopy both within the  NHS Trust and also at national screening centres. He is a bowel cancer screening accredited colonoscopist and an examiner for BCSP colonoscopy accreditation.

Dr Martin is Director of the West London Bowel Cancer Screening Centre, he is the national advisor to Public Health England on endoscopy within the Bowel Cancer screening service and chairs the national advisory committee on quality and safety of endoscopy within screening. He forms an integral part of numerous other professional bodies and has been widely published in peer-reviewed journals.

Especialista en


What is a colonoscopy? A colonoscopy is a type of ...

Capsule endoscopy

What is a capsule endoscopy? A capsule endoscopy is a minimally invasive method of examining the digestive system. It’s a breakth...

Inflammatory bowel disease (IBD)

What is inflammatory bowel disease (IBD)? Inflammatory bowel disease (IBD) a medical term used to describe a group of diseases that cause &...


What is a polypectomy? A polypectomy is a minimally-invasive procedure carried out with a colonoscope or...

Irritable bowel syndrome (IBS)

What is irritable bowel syndrome? Irritable bowel syndrome (IBS) is a functional disorder of the large intestine....

Bloated stomach

What is a bloated stomach? A bloated stomach is when the tummy is stretched ...

Enfermedades, Pruebas y Tratamientos

  • Abdominal pain
  • Acid reflux
  • Barrett's oesophagus
  • Bloated stomach
  • Blood in stool (rectal bleeding)
  • Bowel cancer
  • Bowel cancer screening
  • Capsule endoscopy
  • Chronic diarrhoea
  • Coeliac disease
  • Colitis
  • Colon cancer
  • Colonoscopy
  • Colorectal cancer
  • Constipation
  • Crohn's disease
  • Diarrhoea
  • Digestive diseases
  • Diverticular disease
  • Dysmotility
  • Dysphagia
  • Endoscopic mucosal resection (EMR)
  • Endoscopy
  • Epigastric hernia
  • Food intolerance
  • Food intolerance test
  • Gastric balloon
  • Gastric band
  • Gastric bypass
  • Gastrointestinal bleeding
  • Gastrointestinal endoscopy
  • Gastroscopy
  • Halitosis
  • Helicobacter pylori
  • Hepatic encephalopathy
  • Hiatal hernia
  • Incisional hernia
  • Indigestion (dyspepsia)
  • Inflammatory bowel disease (IBD)
  • Iron deficiency
  • Irritable bowel syndrome (IBS)
  • Lactose intolerance
  • Lactose intolerance test
  • Liver cancer
  • Morbid obesity
  • Nutrition
  • Obesity
  • Oesophagitis
  • Pancreatic cancer
  • pH monitoring
  • Polypectomy
  • Polyps
  • POSE procedure
  • Rectal cancer
  • Rectosigmoidoscopy
  • Second medical opinion
  • Stomach cancer
  • Stomach reduction
  • Stomach ulcer
  • Ulcerative colitis

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  • Bupa Cromwell Hospital
    8 Pennant Mews W8 5JN - London (Central London)
    (+44) 0207 898 9995

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Es un servicio de mensajería privada y videoconferencia que te permite realizar una consulta médica conmigo en cualquier momento y lugar./A private messaging and video conference service that allows you to contact the best doctors at any time and place./È un servizio di messaggistica privata e videoconferenza che ti permette di contattare i migliori medici in ogni momento e in qualsiasi luogo.



Understanding irritable bowel syndrome (IBS)
Have you been experiencing abdominal pain with diarrhoea, constipation, or both? These are the main symptoms of irritable bowel syndrome, a condition which can be managed with specialist help. Learn from Dr John Martin, a leading consultant gastroenterologist and expert in treating IBS, about what IBS is, its symptoms, how it's diagnosed and how it's treated.
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Is bloating ever a sign of something serious?
Bloating is a common sensation that many of us have experienced. While it's very rare that it's a sign of something serious, it's valuable to know when to see a specialist for advice. Dr John Martin, a gastroenterologist, explains the causes of bloating so that you know when to seek medical help.
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Dysmotility: a focus on the oesophagus
Oesophageal dysmotility is a condition in which the muscles in the oesophageal wall fail to contract as they should. This may result in discomfort and/or difficulty in swallowing. Dr John Martin is an expert in treating dysmotility of the intestine, and here he explains in detail about causes and treatment of dysmotility in the oesophagus.
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