Dr Yiannis Kallis

Consultant Physician – Hepatology And Gastroenterology


Dr Yiannis Kallis has been a consultant hepatologist and gastroenterologist since 2011. He divides his time between the Royal Free Hospital and Barts Health (Royal London Hospital), and is an honorary clinical senior lecturer. He graduated from Cambridge University with distinction in 1998, and completed his postgraduate medical training in London.

He was awarded a PhD from Imperial College London in 2010 for his research into stem cells in liver fibrosis and regeneration.

His particular clinical interests lie in chronic liver disease, disorders of the bile ducts (PSC, PBC), advanced therapeutic endoscopy and in liver transplantation. He is local lead for ERCP and PBC services, and runs an outreach liver transplant service for NE London.

He sits on national clinical guideline committees, serves as specialist advisor to NICE, and is actively involved in undergraduate and postgraduate education.

When not working, he enjoys cycling, cooking and spending time with his young family.


  • Hepatology
  • Gastroenterology

Clinical interests

  • Fatty liver disease
  • Alcohol-related liver disease
  • Liver transplantation incl. living related donor transplant
  • Cholangitis and autoimmune liver disease
  • Cirrhosis
  • Liver cancer
  • Disorders of the pancreas, gallbladder and bile duct

Procedures Offered

  • Fibroscan
  • Endoscopy

Like to book an appointment?

Fill out the contact form below or call us on
020 7317 7751 to speak with a member of our team

020 7317 7751 Book a Consultation