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Dr. Constantinos Parisinos

Bsc (Hons), MBChB, MSc, MRCP, PhD

Gastroenterologist

17 years of experience

London, W1G 0AR

(+1 more)

75 connections in healthcare

Skill endorsed

by Dr Bhavna Jaiswal, Dr David Simon and 13 other professionals

4.97

/5

(38 reviews)

17 years of experience

London, W1G 0AR

(+1 more)

75 connections in healthcare

Skill endorsed

by Dr Bhavna Jaiswal, Dr David Simon and 13 other professionals

Areas of expertise

All
Reviews
Skill Endorsements
Colonoscopy
9
5
Bloating
7
1
ERCP Procedure
5
8

Contact

Book


Expert in:

About Dr. Constantinos Parisinos

Dr Constantinos Parisinos - Consultant Gastroenterologist & Pancreatobiliary Specialist

Dr Constantinos Parisinos is a highly experienced Consultant Gastroenterologist and Pancreatobiliary (PB) specialist based in London. He offers expert care for a wide range of digestive and liver conditions, including acid reflux, abdominal pain, irritable bowel syndrome (IBS), liver disease, gallstones, pancreatitis, and bowel cancer screening.

He performs advanced diagnostic and therapeutic procedures, including gastroscopy, colonoscopy, endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP), helping patients get fast, accurate answers and effective treatment plans.

Dr Parisinos trained at the University of Edinburgh and completed specialist gastroenterology training in London. He undertook prestigious PB fellowships at UCLH and Imperial College, and received a competitive UEG Fellowship to further specialise in EUS at the Univesity of Santiago de Compostela, Spain.

Alongside his clinical work, he holds a PhD in Health Data Science from UCL and an MSc in Public Health from the London School of Hygiene & Tropical Medicine. His award-winning research, funded by leading research organisations including the Wellcome Trust and NIHR, focuses on improving care for liver and metabolic conditions using data and genetics. He has published widely in leading journals including Science, J Hepatology, Gastroenterology, and The Lancet Digital Health.

Dr Parisinos believes in personalised, compassionate care and works closely with each patient to understand their symptoms, explain their options clearly, and deliver the best possible outcomes.

Areas of Expertise

  • Heartburn / acid reflux
  • Bloating, abdominal pain, changes in bowel habits, positive FIT test, faecal calprotectin
  • Irritable Bowel Syndrome (IBS)
  • Liver disease (e.g. MASLD)
  • Gallstones and bile duct problems
  • Pancreatic conditions, pancreatic cancer
  • Unexplained weight loss or anaemia
  • Colonoscopy and polypectomy
  • Interventional endoscopy: ERCP & EUS, enteral stenting

Dr Parisinos is welcoming new private patients and offers consultations in central London (One Welbeck, The London Clinic, Nuffield Barts) from August 2025. Appointments available in-person and remotely.


Subspecialties

  • Pancreaticobiliary Medicine (Bile Ducts & Pancreas)
  • Irritable Bowel Syndrome (IBS)
  • Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
  • General (Internal) Medicine

Areas of expertise

All
Reviews
(63)
Skill Endorsements
(36)

Click the bar to read reviews or skill endorsements

Colonoscopy
9
5
Bloating
7
1
ERCP Procedure
5
8
Diarrhoea
5
Pancreatic Disorders
4
Gastroscopy
3
6
Pancreatitis
3
1
Inflammatory Bowel Disease (IBD)
3
Stomach / Abdominal Pain
2
4
Heartburn (Acid Reflux)
2
1
Colitis (Ulcerative Colitis)
2
Irritable Bowel Syndrome (IBS)
2
Gastro-Oesophageal Reflux Disease (GORD)
2
Liver Function Tests
2
Gluten Intolerance
1
Coeliac Disease
1
Gallstones
1
Constipation
1
Weight Loss
1
Fatty Liver Disease
1
BRAVO Capsule
1
Gastrointestinal Bleeding
1
Stool Testing
1
Helicobacter Pylori Infection
1
Functional Gut
1
Swallowing Problems
1
Pancreatic Cancer
2
Percutaneous Endoscopic Gastrostomy (PEG)
2
Endoscopic Ultrasonography (EUS)
2
Endoscopic Ultrasound (EUS)
2
Video Consultation
1
Stenting Procedures
1
Swollen Stomach
Upper Gastrointestinal Conditions (Oesophagus & Stomach)
Swallowing Disorder (Dysphagia)
Small Intestinal Bacterial Overgrowth (SIBO)
Oesophageal Cancer
Microscopic Colitis
Iron Deficiency Anaemia
Hiatus Hernia
Haemorrhoids
Gut Health
Gallbladder Polyp
Dyspepsia (Indigestion)
Food Intolerance
Colorectal Cancer
Barrett's Oesophagus
Crohn's Disease
Diverticulitis
Jaundice
Neuroendocrine Tumours (NETs)
Oesophagitis
Pyloric Stenosis
Reflux and Colic
Stomach (Gastric) Cancer
Primary Sclerosing Cholangitis (PSC)
Oesophageal Spasm
Nausea and Vomiting
Sigmoidoscopy
Pyloric Dilatation
Enteroscopy
Diverticular Disease
Eosinophilic Oesophagitis
Colonic Stent
Achalasia
Nasojejunal (NJ) Feeding Tube
Anal Fissure
Cholangioscopy
Blood in Stool / Rectal Bleeding (Haematochezia)
Nasogastric (NG) Feeding Tube
Gastritis
Colon Polyps
Gallbladder Disease
Endoscopy (OGD)
Gastrostomy-Jejunostomy Tube Insertion
Gallbladder Disease (Medical Management)
Gastric (Stomach) Ulcers
Oesophageal Stent Insertion
Gastroparesis
Lactulose Hydrogen Breath Test
Autoimmune Diseases
Helicobacter Pylori Breath Test
Cholestasis

Registered with

General Medical Council

No. 7041348

British Society of Gastroenterology (BSG)

No. BSG62201

European Society of Gastrointestinal Endoscopy (ESGE)

No. 30875970


Education

University of Edinburgh

Medicine

Graduated 2009


Qualifications

Bsc (Hons), Physiology, 2006, University of Edinburgh

MBChB, 2009, University of Edinburgh

MRCP, 2012, Royal College of Physicians

MSc, Public Health, 2013, London School of Hygiene and Tropical Medicine

PhD, Health Data Science, 2019, University College London

CCT (UK), Gastroenterology, General Internal Medicine, 2021, GMC


Publications

+6

Read publications and papers written by this specialist.

01 / 05 / 2025

A protocol for targeted B-lymphocyte depletion for the treatment of IgG4-related disease - PubMed

Published in Rheumatology

01 / 08 / 2020

Genome-wide and Mendelian randomisation studies of liver MRI yield insights into the pathogenesis of steatohepatitis - PubMed

Published in J Hepatology

01 / 08 / 2018

Variation in Interleukin 6 Receptor Gene Associates With Risk of Crohn's Disease and Ulcerative Colitis - PubMed

Published in Gastroenterology

01 / 09 / 2019

Genetic studies of abdominal MRI data identify genes regulating hepcidin as major determinants of liver iron concentration - PubMed

Published in J Hepatology


Languages spoken

  • English
  • Greek

Insurers

  • Vitality
  • WPA
  • AXA Health
  • Bupa
  • Bupa Fee Assured
  • Aviva Health

Fees

  • New appointment

    £250
  • Follow-up appointment

    £200
*May vary on location

Locations

The London Clinic

20 Devonshire Place, London, United Kingdom, W1G 6BW

4.89(2,487 reviews)

Opening hours

Monday
17:30 - 19:30
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Opening hours

Monday
17:30 - 19:30
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Welbeck

1 Welbeck St, Marylebone, London, London, United Kingdom, W1G 0AR

4.91(1,614 reviews)

Opening hours

Monday
Tuesday
Wednesday
18:00 - 20:00
Thursday
Friday
Saturday
Sunday

Areas of expertise

All
Reviews
Skill Endorsements
Colonoscopy
9
5
Bloating
7
1
ERCP Procedure
5
8

Contact

Book

Reviews

AI Review Summary

This summary was created by AI based on recent reviews

Dr. Constantinos Parisinos is professional and clear, and listens to patient concerns, building confidence and peace of mind. Patients appreciate his detailed explanations of procedures like colonoscopy, ERCP, and endoscopy; his careful, skilled approach makes these interventions smooth and efficient. Many patients find solutions for common gut problems, including bloating and diarrhoea.

5
verified patient
09 Oct 2026

Dr Parisinos is an excellent Gastro consultant who is extremely knowledgeable, professional and experienced. His bed-side manners were excellent, always taking his time to listen and understand my situation. He treated me fully and I highly recommend him as a Gastroenterologist

5
verified patient
30 Sep 2026

Dr Parisinos is a very thoughtful surgeon who understood my issues completely. He then referred the best treatment suited to my condition and the outcome has been a great success. Thank you

Patient seen for:
5
verified patient
24 Aug 2026

I had the pleasure of meeting Dr Constantinos Parisinos at Welbeck and I must say I found his knowledge, compassion and general approach truly exceptional. I wholeheartedly recommend him to others fantastic Doctor and a really nice chap.

Patient seen for:
5
verified patient
11 Aug 2026

Dr Parasinos was very professional, knowledgeable and showed great empathy and care towards me. I really appreciated his clear and easy to understand explanations of my procedure and ensuring he answered all of my questions. I felt very well looked after and supported by Dr Parasinos and his medical team - thank you so much.

Patient seen for:
Reply from Constantinos Parisinos
12 Aug 2026
avatar-image

Thanks so much!

5
verified patient
08 Aug 2026

Overall good experience and excellent speed on getting same day blood tests before I moved.

Reply from Constantinos Parisinos
12 Aug 2026
avatar-image

Thank you!

5
verified patient
29 Jul 2026

Dr parasites was very considerate and claming through my whole procedure

Patient seen for:
Reply from Constantinos Parisinos
04 Aug 2026
avatar-image

Thanks very much!

5
verified patient
15 Jun 2026

Excellent service, delivered professionally and empathetically

Patient seen for:
Reply from Constantinos Parisinos
25 Jul 2026
avatar-image

Thanks so much - appreciated!

5
verified patient
12 Jun 2026

Dr Parsinos treats with a smile, that itself gives very much assurance that everything is under control. He explains things in detail to take a well informed decision.

Patient seen for:
Reply from Constantinos Parisinos
25 Jul 2026
avatar-image

Thank you!

5
verified patient
01 Jun 2026

I’m very grateful to be seen by Dr Parisinos and would highly recommend him. I felt my symptoms and concerns were really listened to. He’s very friendly and clearly cares about the wellbeing of his patients

Reply from Constantinos Parisinos
25 Jul 2026
avatar-image

Thanks very much!

5
verified patient
15 May 2026

Brilliant Dr. Gave me assurance and vital advice to maintain my guy health. In addition, gave me information and websites to help me manage my gut. This gave me peace of mind that I can do my own research to answer any additional queries I may have. Thank you

Patient seen for:
Reply from Constantinos Parisinos
15 May 2026
avatar-image

Thank you!

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Skill Endorsements

Constantinos Parisinos is great Gastroenterologist.

22 Oct 2026
Endorsed for
Pancreaticobiliary Medicine (Bile Ducts & Pancreas)
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease

Dr Bhavna Jaiswal

Dr Bhavna Jaiswal

Psychologist
Is a colleague

Excellent colleague and mentor Brilliant endoscopist

18 Oct 2026
Endorsed for
Pancreaticobiliary Medicine (Bile Ducts & Pancreas)
Colonoscopy

Dr David Simon

Dr David Simon

Gastroenterologist
Is a colleague

who previously trained with our Pancreaticobiliary Medicine Group at University College Hospital, and is now a consultant colleague who is expert in this area as well as general gastroenterology.

25 Jul 2026
Endorsed for
ERCP Procedure
Pancreaticobiliary Medicine (Bile Ducts & Pancreas)
Endoscopic Ultrasound (EUS)

Professor Stephen P Pereira

Professor Stephen P Pereira

Gastroenterologist
Is a colleague

Highly recommended colleague and expert in his field.

25 Jul 2026
Endorsed for
Stomach / Abdominal Pain
Video Consultation

Dr Rooshi Nathwani

Dr Rooshi Nathwani

Gastroenterologist
Is a colleague
Dr. Constantinos Parisinos logo

Get to know Dr. Constantinos Parisinos

Videos
Articles

Most recent videos

Explore videos from Dr. Constantinos Parisinos explaining process of procedures and other important things you should know before choosing your provider.

Gastrocare London

Gastrocare London

Leading Gastroenterology & Interventional Endoscopy, Pancreatobiliary Services in the heart of Central London. Situated in World-leading facilities including One Welbeck, The London Clinic, and Nuffield Health at St. Bartholomew's Hospital.

29 September 2025

Most recent articles

Read articles from Dr. Constantinos Parisinos explaining process of procedures and other important things you should know before choosing your provider.

Genome-wide and Mendelian randomisation studies of liver MRI yield insights into the pathogenesis of steatohepatitis - PubMed

Genome-wide and Mendelian randomisation studies of liver MRI yield insights into the pathogenesis of steatohepatitis - PubMed

We estimated levels of liver inflammation and scarring based on magnetic resonance imaging of 14,440 UK Biobank participants. We performed a genetic study and identified variations in 6 genes associated with levels of liver inflammation and scarring. Participants with variations in 4 of these genes also had higher levels of markers of liver cell injury in blood samples, further validating their role in liver health. Two identified genes are involved in the transport of metal ions in our body. Further investigation of these variations may lead to better detection, assessment, and/or treatment of liver inflammation and scarring.

01 August 2020

pubmed.ncbi.nlm.nih.gov

FAQ

What are Dr. Constantinos Parisinos's reviews like?

Dr. Constantinos Parisinos's overall patient rating is 4.97 out of 5 stars on Doctify. This is based on 38 reviews.

What languages does Dr. Constantinos Parisinos speak?

Dr. Constantinos Parisinos speaks English and Greek

Where is Dr. Constantinos Parisinos located?

Dr. Constantinos Parisinos primarily practices at Welbeck, located at 1 Welbeck St, Marylebone, London, London, United Kingdom, W1G 0AR
See more locations

What are Dr. Constantinos Parisinos working hours?

Dr. Constantinos Parisinos is working Monday (17:30 - 19:30), Wednesday (18:00 - 20:00)

Find where Dr. Constantinos Parisinos operates today

Does Dr. Constantinos Parisinos accept new patients?

Dr. Constantinos Parisinos generally accepts new patients.

Get in touch with this specialist to enquire as a new patient