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The London Clinic

Dr Yiannis Kallis is available for video consultations.
For help with this service please contact our Appointments team:
+44 (0)20 7616 7693 | appointments@thelondonclinic.co.uk
Dr Yiannis Kallis is a Consultant Hepatologist and Gastroenterologist specialising in liver, pancreas and bile ducts disease. He performs the FibroScan test, and endoscopy.

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Fast track your treatment with Dr Yiannis Kallis. Call us on 020 3944 1073.

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Specialties and sub-specialties

Liver Diseases
Liver Disease
Pancreatic disease
Gallbladder and Bile Duct disease
Liver Cancer

Specialist microsites

London Liver Group

Professional profile

Dr Yiannis Kallis is a Consultant Hepatologist and Gastroenterologist at the Royal London Hospital and the Royal Free Hospital London, two of the UK's leading teaching hospitals.

His practice covers a broad range of gastro-intestinal diseases with a particular emphasis on liver disease and disorders of the pancreas and bile ducts.

Dr Kallis is a highly skilled diagnostic and therapeutic endoscopist, with a particular expertise in ERCP (endoscopy of the bile duct and pancreatic duct). He is Clinical Lead for Liver Diseases at the Royal London Hospital and runs the NE London liver transplant network.

Dr Kallis graduated from Cambridge University with distinction and undertook postgraduate specialty training across several leading London teaching hospitals. He was awarded a PhD in 2010 for his research into liver fibrosis and regeneration at Imperial College London and has published his work in high impact peer-reviewed journals.

Dr Kallis is currently an Honorary Clinical Senior Lecturer at Barts and the London School of Medicine and Dentistry, where he is a principal investigator on several multi centre clinical trials in treatments for advanced liver disease and for inflammatory disorders of bile ducts.

He is actively involved in teaching and helps to run Masters and Specialty Certificate Examination courses in gastroenterology.

He sits on the writing group for national guidelines in liver disease, is a specialist advisor to the National Institute of Health and Care Excellence (NICE), and serves on the British Society for Gastroenterology (BSG) liver committee.

Clinical interests

  • Liver health and FibroScan
  • Fatty Liver
  • Abnormal LFTs

Current posts

  • Consultant Hepatologist and Gastroenterologist
    Barts Health NHS Trust (Royal London Hospital)
  • Honorary Clinical Senior Lecturer
    Barts and the London School of Medicine and Dentistry
  • Honorary Consultant Hepatologist
    Royal Free London NHS Foundation Trust

Medical training

Year qualified 1998
  • Cambridge 1993 - 1998


Here’s what a weekend bender does to your body
Dr Kallis explains some of the effects of a weekend's drinking to Metro.
Fizz-Free February
Alcohol-free challenges are now hugely popular, but do they offer lasting benefits? Dr Kallis explains.

Personal interests

Dr Kallis enjoys cycling, football, chess and spending time with his young family.