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Dr Yiannis Kallis
Dr Yiannis Kallis
MA(Cantab) MB BChir PhD FRCP
Gastroenterology
126 reviews+ Add review
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Info

SUBSPECIALTIES

pancreaticobiliary medicine (bile ducts & pancreas)
Hepatology

REGISTERED WITH

General Medical Council: 4583211

LANGUAGES

english

RECOMMENDED FOR

4

Gastroenterology

About

Dr Yiannis Kallis is a Consultant Hepatologist and Gastroenterologist at the Royal London Hospital (Barts Health NHS Trust) and the Royal Free Hospital London, two of the UK's leading teaching hospitals, where his practice covers a broad range of gastro-intestinal diseases. He specialises in liver disease and disorders of the pancreas and bile ducts, and runs the NE London outreach liver transplant network. He is Clinical Lead for Hepatology at the Royal London Hospital.

He is a highly skilled in diagnostic and therapeutic endoscopy and colonoscopy, with a particular expertise in complex ERCP (endoscopy of the bile duct and pancreatic duct). He is clinical lead for ERCP services at Bart Health for the HPB cancer board. He is at the forefront of research into developing novel endoscopic treatments for pancreato-biliary cancers, and is a specialist advisor to the National Institute of Health and Care Excellence (NICE) in this field. He serves on the British Society for Gastroenterology (BSG) liver committee.

He 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, stem cells and regeneration at Imperial College London and Cancer Research UK, and publishes his work in high impact peer-reviewed journals. 

He is currently an Honorary Clinical Senior Lecturer at Barts and the London School of Medicine and Dentistry, QMUL, 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 regularly lectures in gastroenterology and hepatology and supervises MSc student projects in liver disease at QMUL. He sits on the writing group for national guidelines in liver disease. 

 

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Medical Procedures

  • Gastroscopy
  • Colonoscopy
  • Therapeutic endoscopy
  • ERCP
  • Fibroscan
  • Portal Hypertension

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Special Interests

  • Abnormal LFTs (liver function tests)
  • Alcohol related liver and GI disorders
  • Fatty liver disease
  • Abdominal Pain
  • Viral hepatitis
  • Liver disease
  • Cirrhosis
  • Pancreas, bile duct and gallbladder diseases
  • Liver Cancer
  • Liver transplantation

Education

  • Trinity College Cambridge, MA(Hons) MB BChir 
  • Royal College of Physicians London, FRCP
  • Imperial College London, PhD
  • Member of the British Society of Gastroenterology, the British Association for the Study of the Liver, and the European Association for the Study of the Liver

Verified Patient Reviews

All reviews are from verified patients who have seen this specialists. If you'd like more information on reviews, please have a look at our help center.

Review Breakdown

5 Stars
119
4 Stars
7
3 Stars
0
2 Stars
0
1 Star
0

Overall

4.9

Explanation

4.9

Bedside Manner

4.9

Overall
Explanation
Bedside Manner
Such a relief to find someone who was willing to listen and who could explain so clearly and carefully what was going on with me and what the likely implications and options are. And he did the report the same day so I could go back to my GP. Thank you so much Dr Kallis
Verified Patient
20-08-2019
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Excellent
Verified Patient
16-08-2019
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Excellent very clear
Verified Patient
29-07-2019
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Good
Verified Patient
26-07-2019
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Good communication.
Verified Patient
15-07-2019
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Good
Verified Patient
05-07-2019
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Very good, thorough
Verified Patient
05-07-2019
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Very good
Verified Patient
28-06-2019
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Outstanding, really personable and patient-centric
Verified Patient
22-06-2019
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Ok
Verified Patient
14-06-2019
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On time. Clear explanation. Recommended.
Verified Patient
14-06-2019
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Great to talk to, very knowledgeable and reassuring.
Verified Patient
09-06-2019
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Excellent
Verified Patient
07-06-2019
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Good experience%
Verified Patient
03-06-2019
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Good advice
Verified Patient
03-06-2019
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Bedside Manner
Very good doctor.
Verified Patient
31-05-2019
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Excellent
Verified Patient
31-05-2019
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Bedside Manner
Straight forward ,clear and very good time keeping
Verified Patient
24-05-2019
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Bedside Manner
Excellent experience, Dr. Kallis is knowledgeable, professional and informative.
Verified Patient
20-05-2019
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Bedside Manner
Friendly approachable. Made me feel comfortable, thorough.
Verified Patient
20-05-2019
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Bedside Manner
From the 1st appointment very professional, helpful in terms of explaining everything.
Verified Patient
17-05-2019
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Bedside Manner
Excellent. Very professional and reassuring.
Verified Patient
17-05-2019
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Straight forward and clear
Verified Patient
13-05-2019
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Bedside Manner
Fast friendly service.
Verified Patient
13-05-2019
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Bedside Manner
Excellent, very clear advice.
Verified Patient
03-05-2019
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Bedside Manner
Dr Yiannis is good doctor
Verified Patient
29-04-2019
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Bedside Manner
Good.
Verified Patient
29-04-2019
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Bedside Manner
Comprehensive review of the situation and such sharp clarity of diagnosis and explanation. Thank you.
Verified Patient
29-04-2019
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Bedside Manner
Very professional
Verified Patient
08-04-2019
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Bedside Manner
Great and nice to talk to
Verified Patient
08-04-2019
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Bedside Manner
Dr Kallis is a professional who one can trust. My experience with Dr Kallis, although we had some bad news with regards to my health, has been fantastic. We have identified an issue, the issue has been clearly explained to me, I have a clear pictured of next actions to be done. Overall, I am Very great full to Dr Kallis as he has been super helpful. Dr Kallis: a professional who can de trusted!!! Many thanks !!!
Verified Patient
01-04-2019
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Bedside Manner
Couldn’t be better
Verified Patient
01-04-2019
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Bedside Manner
Very polite and easy to talk to. I visited a little unaware of what my issue may or may not have been, but Dr.Kallis explained all very clearly.
Verified Patient
25-03-2019
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Bedside Manner
Perfect
Verified Patient
22-03-2019
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Bedside Manner
Very Professional and reassuring
Verified Patient
22-03-2019
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Bedside Manner
Saw me at short notice. Was very kind. Would recommend him.
Verified Patient
18-03-2019
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Bedside Manner
Good. Explained things clearly
Verified Patient
18-03-2019
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Bedside Manner
I had two appointments with Dr Yiannis Kallis. Both went incredibly well. Very positive and very informative .
Verified Patient
08-03-2019
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Bedside Manner
Very good doctor, concise and clear answers
Verified Patient
08-03-2019
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Bedside Manner
Very good experience
Verified Patient
04-03-2019
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Bedside Manner
Quick and efficient visit. Explained purpose of scan clearly and offered insightful information.
Verified Patient
01-03-2019
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Bedside Manner
Efficient, courteous, competent and good bedside manner
Verified Patient
01-03-2019
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Bedside Manner
Appointment was on time and lasted 30 minutes. Dr Kallis explained things in great detail and was very patient with all my questions. Highly recommended.
Verified Patient
22-02-2019
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Bedside Manner
Very professional and knowledgable.
Verified Patient
17-12-2018
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Bedside Manner
Professional service
Verified Patient
17-12-2018
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Bedside Manner
Good
Verified Patient
14-12-2018
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Bedside Manner
Good
Verified Patient
14-12-2018
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Bedside Manner
Very helpful
Verified Patient
14-12-2018
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Bedside Manner
Professional and considered
Verified Patient
14-12-2018
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Bedside Manner
He made me feel very comfortable
Verified Patient
10-12-2018
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Bedside Manner
He was very nice and easy to talk to and made me feel at ease about my query
Verified Patient
30-11-2018
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Bedside Manner
Warm and helpful. Not judgmental. Gave more broad advice than just liver scan which was appreciated. All good! Thanks.
Verified Patient
30-11-2018
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Bedside Manner
His explanation about my issues was very clear.
Verified Patient
30-11-2018
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Bedside Manner
Dr Kallis was very helpful and explained everything in details
Verified Patient
30-11-2018
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Bedside Manner
Dr Kallis asks a lot of questions in order to understand the entire synthoms and the current situation of me as a patient. He is also able to explain the complicated medical terms very easy for a non-medical person to understand. In addition, Dr Kallis is a very kind and polite person. I can only highly recommend this doctor!
Verified Patient
26-11-2018
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Bedside Manner
Always very pleasant & accurate on medical explanations. Makes the visits more bearable
Verified Patient
21-11-2018
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Bedside Manner
Dr Khallis is THE best Doctor I have ever had the pleasure of being treated by. Very accommodating and empathic to all patient needs. I always prefer to be seen by him 5*******
Verified Patient
21-11-2018
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Bedside Manner
Very helpful and clear information
Verified Patient
19-11-2018
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Bedside Manner
Always leave with a clear picture of where I’m at. Feel comfortable asking him questions and he answers in a way that I easily understand. He’s a great doctor and I trust and respect him.
Verified Patient
16-11-2018
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Bedside Manner
Very personal approach, careful assessment of all the symptoms, thorough investigation of the issues
Verified Patient
16-11-2018
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Bedside Manner
Seemed calmly efficient and to understand the issues involved in my case. I felt greatly reassured by his attitude and proposed line of investigation.
Verified Patient
12-11-2018
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Bedside Manner
Good
Verified Patient
09-11-2018
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Bedside Manner
Calm, supportive and a gentleman
Verified Patient
09-11-2018
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Bedside Manner
Took the time to go through the results in detail and even researched my hospital records to find out more about my situation. Listened to all my concerns and questions too. All in all, a great service
Verified Patient
09-11-2018
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Bedside Manner
Very easy and reassuring.
Verified Patient
02-11-2018
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Bedside Manner
Very friendly,thorough,clear and made me feel comfortable for the process.highly recommend
Verified Patient
28-09-2018
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Extremely helpful and professional.
Verified Patient
24-09-2018
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Bedside Manner
Very efficient friendly and insightful.
Verified Patient
10-09-2018
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Bedside Manner
Very clear. Intelligent consultation.
Verified Patient
03-09-2018
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Bedside Manner
Very good
Verified Patient
03-09-2018
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Bedside Manner
A very clear and concise set of explanations with a good bedside manner
Verified Patient
03-09-2018
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Bedside Manner
Excellent very happy with level of service
Verified Patient
31-08-2018
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Bedside Manner
Very friendly and knowledgeable doctor. He explained the issues and diagnostic very clear to me. Thank you
Verified Patient
31-08-2018
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Bedside Manner
Very pleasant specialist who took the time to explain things in depth and in patient friendly language. Would highly recommend.
Verified Patient
27-07-2018
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Bedside Manner
Very helpful as always
Verified Patient
27-07-2018
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Bedside Manner
Extremely. Clear and concise excellent
Verified Patient
02-07-2018
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Bedside Manner
Good
Verified Patient
29-06-2018
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Bedside Manner
Excellent
Verified Patient
29-06-2018
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Bedside Manner
Very good
Verified Patient
29-06-2018
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Bedside Manner
Wonderful
Verified Patient
29-06-2018
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Overall
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Bedside Manner
Good
Verified Patient
22-06-2018
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Bedside Manner
Excellent
Verified Patient
22-06-2018
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Bedside Manner
Doctor explained the issue in simple details that was easy for me to understand, I felt very comfortable discussing all this and felt that I was in very safe hands. Highly recommend
Verified Patient
15-06-2018
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Bedside Manner
Excellent
Verified Patient
01-06-2018
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Bedside Manner
I found Dr Kallis as fantastic consultant in the liver clinic. I will strongly recommend Dr Kallis to anyone looking for a liver specialist.
Verified Patient
25-05-2018
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Bedside Manner
Happy
Verified Patient
25-05-2018
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Bedside Manner
Very good care
Verified Patient
26-03-2018
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Bedside Manner
Went through all diagnostics to eliminate any issue
Verified Patient
26-03-2018
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Bedside Manner
Dr Kallis is very helpful in providing the background, the reason of the tests to be done, etc.
Verified Patient
26-03-2018
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Bedside Manner
Excellent prompt service
Verified Patient
19-03-2018
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Bedside Manner
Very clear. Explained things well. Good doctor.
Verified Patient
19-03-2018
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Bedside Manner
Very good and easy to understand in layman’s terms
Verified Patient
19-03-2018
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Bedside Manner
Excellent introductory visit, put me at instant ease, was structured in his approach and gave clear feedback, on the next phase of treatment.
Verified Patient
12-03-2018
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Bedside Manner
Dr Khallis was excellent. He took his time during the consultation to note my medical history and to discuss my concerns. He did not rush and explained everything complex medical terms. Highly recommended.
Verified Patient
12-03-2018
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Bedside Manner
Excellent service. Everything fully explained
Verified Patient
05-03-2018
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Bedside Manner
Very good doctor!
Verified Patient
05-03-2018
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Bedside Manner
I came to see Doctor Yiannis for my liver problem . The doctor very nice and calm . The way the dr was explaining things was very comforting and the results were all good as well . I would recommend anyone to decide for a private treatment come yianis
Verified Patient
05-03-2018
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Bedside Manner
Reassuring and helpful
Verified Patient
05-03-2018
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Bedside Manner
I saw dr. Kallis and he’s awesome, he helped me with my problem and went through all tests to make sure everything is sorted :) Thanks to the best Gastroenterologist I’ve ever seen :).
Verified Patient
02-03-2018
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Bedside Manner
Good
Verified Patient
02-03-2018
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Bedside Manner
Excellent and charming intelligent conversation
Verified Patient
26-02-2018
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Bedside Manner
Excellent communication and listening skills. Very pleasant to speak to and very helpful.
Verified Patient
26-02-2018
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Bedside Manner
Everyone was super helpful. Great experience. Fast and saw me quickly. I really appreciate it.
Verified Patient
09-02-2018
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Bedside Manner
Very friendly and provides good explanation of a health condition. Strongly recommend
Verified Patient
09-02-2018
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Bedside Manner
Very reassuring. I know I’m in the right hands.
Verified Patient
09-02-2018
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Bedside Manner
Excellent as all very comprehensible and comprehensive in an extremely professional but bedside friendly manner.
Verified Patient
29-01-2018
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Bedside Manner
Very approachable, professional and the explanations were easily understood and very helpful. I would personally recommend Dr. Kallis to anyone and look forward to my follow up upon moving to the UK.
Verified Patient
26-01-2018
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Bedside Manner
An excellent reassuring liver scan was performed quickly and effectively. Dr Kallis explained the procedure and all results with great clarity and professionalism. Many thanks.
Verified Patient
22-01-2018
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Bedside Manner
Very kind and patient. Willing to answer questions and takes time to explain. Came out with clear next steps. Confident I am in good hands.
Verified Patient
19-01-2018
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Bedside Manner
Dr Kallis is a good person who really cares.
Verified Patient
14-11-2017
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Bedside Manner
I am glad my met Dr. Kallis, he gave me a thorough explanation of all the issues I presented to him. Thank you doctor. Will not hesitate to recommend him to anyone.
Verified Patient
02-10-2017
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Bedside Manner
I am very glad to have met Dr. Kallis . He gave me a thorough explanation of my issues. I will not hesitate to recommend him to anyone.
Verified Patient
29-09-2017
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Bedside Manner
I am very thankful to the doctor, got all the answers for the questions I had!
Verified Patient
20-07-2017
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Bedside Manner
Excellent
Verified Patient
17-05-2017
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Bedside Manner
He is top doctor the best
Verified Patient
18-04-2017
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Bedside Manner
Very thorough, very thoughtful, very responsive, very caring. I am a US citizen on business in London. Found myself very ill and in need of a gastroenterologist. Found Dr Kallis on Doctify. Perfect solution. Given the unusual nature of my problem coupled with not being from the UK, Dr Kallis went the extra mile to stay on top of my case, intervene with other medical professionals on my behalf and completely make sure I was well cared for. Top notch. All the way. Highly recommended.
Verified Patient
01-12-2016
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Bedside Manner
I saw this specialist recently, with his truly lovely specialist nurse. All my questions about a problem which had been highly concerning were answered and I left the appointment reassured and with a very clear plan of action. A huge thanks to the medical team for the excellent, thorough medical and human care.
Verified Patient
29-10-2016
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Bedside Manner
Met Dr Kallis first time today for advice on two questions around colon screening and wellbeing. Dr Kallis offered clear and friendly advice and a good choice for next steps. Very friendly team. Thank you.
Verified Patient
26-08-2016
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Bedside Manner
A year ago I had an operation that changed my life. Your support through it all has been amazing, for this I am eternally grateful.
Verified Patient
06-07-2016
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Bedside Manner
Dear Dr Kallis. Thank you for your exceptionally skilful assistance today. I was left with genuinely no awareness of the procedure at all, no apparent after effects and was able to meet colleagues for lunch afterwards. I am sure that you did do the endoscopy but I have no actual knowledge of it! Many thanks.
Verified Patient
06-07-2016
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Bedside Manner
Thank you for your second letter to my GP and copied to me. Also for explaining so carefully my digestive/metabolic status to me when we met. I felt you appreciated deeply how my experiences had left me so anxious at the slightest thing looking wrong. I am so grateful. Now I know the baseline I can keep things in perspective more easily and I feel much better. Even my hip feels a bit better, probably due to relaxation generally. Anyway I am doing more exercise. It felt a bit of an ordeal coming to such a big hepatic centre but I was very glad to be looked after by you and I wish you every success in your future career.
Verified Patient
06-07-2016
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Bedside Manner
We would like to thank you for the care and support and is planning the treatment you provided.
Verified Patient
18-04-2016
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Bedside Manner
Thank you all very much for taking me into your care and taking very good care me.
Verified Patient
18-04-2016
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Bedside Manner
I really couldn't be more grateful. Thank you for giving me the hope to live...
Verified Patient
15-04-2016
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Dear Yiannis, thank you very much for taking good care of my daughter. May God bless you and your family.
Verified Patient
15-04-2016
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Bedside Manner
Dear Dr Kallis, we just wanted to write to you in person to say thank you for everything you did to care for our Dad, Andrew, both in getting the hospital to take his case seriously and your advice during his final days. We also wanted to mention and say thank you to your team and in particular Dr Alex Zissimopoulos, her care for Dad and her patience with our many questions was was a great comfort to us all. Thanks again and all the best with the great work you do.
Verified Patient
15-04-2016
Helpful?0

Peer Recommendations

BY dr Mohamed Shariff

13-06-2018
Yiannis and I were colleagues and he was an excellent teacher and doctor.
For specialty: Gastroenterology
For conditions: Liver disease
For procedures: Gastroscopy
Connection: We trained together

BY dr Philip Woodland

14-09-2016
Dr Kallis is an exceptional clinician, and a valuable colleague and opinion. Patients I have referred to him have been delighted. I would trust him to treat my family.
For specialty: Gastroenterology
Connection: Is a colleague

BY dr Gareth Parkes

28-02-2017
Dr Kallis, is a hugely experienced and dedicated physician who is always empathic and patient focussed – I would recommend him without hesitation
For specialty: Gastroenterology
Connection: Is a colleague
I have known Dr Yiannis Kallis for over 12 years. He is a highly skilled, knowledgeable and conscientious hepatologist, who always puts his patients first. His gentle manner and humanity are exemplary and I would certainly recommend him to any of my family members and friends without hesitation.
For specialty: Gastroenterology
Connection: Is a colleague

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