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Dr John Martin

MA MD FRCP

Gastroenterologist

36 years of experience

London, SW5 0TU

(+1 more)

20 connections in healthcare

Skill endorsed

by Dr Akeel Alisa, Dr. Syed Hassan and 3 other professionals

4.9

/5

(143 reviews)

36 years of experience

London, SW5 0TU

(+1 more)

20 connections in healthcare

Skill endorsed

by Dr Akeel Alisa, Dr. Syed Hassan and 3 other professionals

Areas of expertise

All
Reviews
Skill Endorsements
Colonoscopy
58
Gastroscopy
23
Bloating
17

Contact


Expert in:

About Dr John Martin

Dr John Martin is a Consultant Gastroenterlogist at Imperial Healthcare Trust.

John qualified from Cambridge University and King's College Hospital in 1990 and trained in gastroenterolgy within Northwest Thames. He was appointed as a consultant at Chelsea and Westminster Hospital in 2002 before moving to Charing Cross Hospital in 2006.

John has a vast experience in all aspects of gastroenterology including investigation and management of Inflammatory Bowel Disease and Irritable Bowel Syndrome.

John has a specialist interest in Bowel Cancer Screening, the subject of his MD awarded by the University of London in 2002. He is Director of the West London Bowel Cancer Screening Centre and the National Advisor to Public Health England for endoscopy witin the Bowel Cancer Screening Programme.

John is an expert colonosocpist, performing high quality, safe, comfortable procedures and is accredited to perform colonoscopy within the Bowel Cancer Screening Programme. He provides extensive training to junior doctors within his NHS practice, teaches colonoscopy on National Training Courses and is an examiner for colonoscopy acceditation within the Bowel Cancer Screening programme.


Diseases, Medical Tests and Treatments

Upper GI Endoscopy

Colonoscopy

Bowel cancer screening

Advanced therapeutic colonoscopy

Capsule endoscopy

Abdominal pain

Diarrhoea or constipation

Rectal bleeding

Bloating

Swallowing dificulties

Nausea or vomiting



Subspecialties

  • Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
  • Irritable Bowel Syndrome (IBS)

Areas of expertise

All
Reviews
(211)
Skill Endorsements
(6)

Click the bar to read reviews or skill endorsements

Colonoscopy
58
Gastroscopy
23
Bloating
17
Diarrhoea
16
Blood in Stool / Rectal Bleeding (Haematochezia)
14
Heartburn (Acid Reflux)
12
Upper Gastrointestinal Conditions (Oesophagus & Stomach)
7
Bowel Cancer Screening
7
Colitis (Ulcerative Colitis)
5
Gallstones
5
Irritable Bowel Syndrome (IBS)
5
Crohn's Disease
5
Stomach / Abdominal Pain
4
1
Endoscopy (OGD)
4
Constipation
4
Video Consultation
3
1
Food Intolerance
3
Gastro-Oesophageal Reflux Disease (GORD)
3
Swollen Stomach
2
Dyspepsia (Indigestion)
2
Ultrasound
1
Coeliac Disease
1
Hiatus Hernia
1
Appendicitis
1
Small Bowel Capsule Endoscopy
1
Functional Bowel Disease
1
Fatty Liver Disease
1
Barrett's Oesophagus
1
Inflammatory Bowel Disease (IBD)
1
Nausea and Vomiting
1
Gallbladder Polyp
1
Microscopic Colitis
1
Colon Cancer
1
Reflux and Colic
1
Bowel Cancer
1
Colon Polyps
1
Achalasia
Colorectal Cancer
Gastric (Stomach) Ulcers
Gastrointestinal Bleeding
Gastroparesis
Iron Deficiency Anaemia
Jaundice
LPR Reflux
Oesophageal Cancer
Oesophageal Spasm
Oesophagitis
Percutaneous Endoscopic Gastrostomy (PEG)
Pyloric Stenosis
Sigmoidoscopy

Registered with

General Medical Council

No. 3336920


Education

University of Cambridge

Medicine

Graduated 1989


Qualifications

Member of the British Society of Gastroenterology

Member of the American Society for Gastrointestinal Endoscopy


Languages spoken

  • English

Insurers

  • General and Medical
  • Bupa Fee Assured
  • The Exeter
  • Simply Health (Dental)
  • Healix Health Services
  • Cigna
  • Saga Health Insurance
  • Bupa
  • WPA
  • Allianz Worldwide Care
  • AXA Health
  • Aviva Health
  • Vitality
  • Aetna

Fees

  • New appointment

    £260
  • Follow-up appointment

    £180
*May vary on location

Locations

Cromwell Hospital

164-178 Cromwell Rd, London, United Kingdom, SW5 0TU

4.87(2,010 reviews)

Opening hours

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Paid Parking
View practice profile

Opening hours

Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Paid Parking
View practice profile

Welbeck

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

4.91(1,511 reviews)

Opening hours

Monday - Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Paid Parking
View practice profile

Areas of expertise

All
Reviews
Skill Endorsements
Colonoscopy
58
Gastroscopy
23
Bloating
17

Contact

Reviews

AI Review Summary

This summary was created by AI based on recent reviews

Dr John Martin is professional and clear in his patient consultations. He provides thorough explanations of diagnostic procedures, reassuring patients about their care for many gastrointestinal issues. Patients report positive experiences with colonoscopy and gastroscopy.

5
verified patient
03 Sep 2026

Dr Martin saw me at short notice whilst I was away and provided a clear and reassuring explanation of my symptoms for which I was very grateful. Thank you

Patient seen for:
Reply from John Martin
04 Sep 2026
avatar-image

Thank you for taking the time to leave a review. I am delighted that I was able to help. Best wishes. John Martin

5
verified patient
02 Sep 2026

Dr Martin and all the team provided a very accessible and professional service. Appointments were booked quickly, information was clear. A very good experience overall

Reply from John Martin
04 Sep 2026
avatar-image

Thank you for your feedback. I am pleased that you had a positive experience. Best Wishes. John Martin

4.67
verified patient
01 Sep 2026

He was very kind and helpful

Reply from John Martin
04 Sep 2026
avatar-image

Thank you for your positive feedback. Best wishes. John Martin

5
verified patient
30 Aug 2026

I am very reassured by Dr Martin’s experience and intellect. He clearly knows his topic and has exceptional abilities. He communicates clearly and well. He is also very personable and likable. I have full confidence in him.

Reply from John Martin
04 Sep 2026
avatar-image

I am delighted that you were happy with your experience. Thank you for taking the time to leave such positive feedback. Best wishes. John Martin

5
verified patient
29 Aug 2026

Dr. Martin is excellent. He takes the time to listen, explains everything clearly, and answers questions with patience. His calm and reassuring manner immediately puts you at ease, and you feel that you are in very capable hands. The nurses were wonderful too, always smiling, attentive, and doing their best to make you feel comfortable throughout your visit.

Patient seen for:
Reply from John Martin
04 Sep 2026
avatar-image

Thank you for taking the time to leave such positive review. It is greatly appreciated, and I am delighted that you had a good experience. Best wishes. John Martin

5
verified patient
16 Aug 2026

Dr John Martin is super kind and super helpful and clear during his consultations. He is also super efficient and it is much appreciated.

Patient seen for:
Reply from John Martin
04 Sep 2026
avatar-image

Thank you for taking the time to leave such positive review. It is greatly appreciated, and I am delighted that you had a good experience. Best wishes. John Martin

5
verified patient
16 Aug 2026

Dr Martin listened to me, didn’t make me feel rushed, was thorough and very informative. The hospital was beautiful, clean and inviting. All staff I had communicated with were friendly and professional! I had to travel two hours to visit this hospital, and train fare was expensive but I’d do it again and again to get this level of care and service because you can’t put a price on your health and wellbeing.

Reply from John Martin
04 Sep 2026
avatar-image

Thank you for your feedback. I am delighted that you had a positve experience from myself and the team. BW John Martin

5
verified patient
11 Aug 2026

I had a very positive experience with Dr Martin. From the beginning, he was professional, attentive and made me feel completely at ease. He took the time to listen carefully to my concerns, explained everything clearly and answered all of my questions without making me feel rushed. I really appreciated his calm and reassuring manner, as well as the genuine care and attention he showed throughout my appointment. I felt that I was in very good hands and left the consultation feeling reassured and confident about the next steps. I would highly recommend Dr Martin to anyone looking for a knowledgeable, professional and caring doctor.

Patient seen for:
Reply from John Martin
12 Aug 2026
avatar-image

I am pleased that you were happy with your consultation. Thank you for taking the time to leave your feedback. Best wishes. John Martin

5
verified patient
07 Aug 2026

I found Dr Martin to be professional and empathetic. He was a good listener and understood my symptoms, providing a clear understanding of what was going on.

Patient seen for:
Reply from John Martin
12 Aug 2026
avatar-image

Thank you for taking the time to write a positive review. I am delighted that you were pleased with your experience. Best wishes. John Martin

5
verified patient
06 Aug 2026

Attended to discuss findings of Endoscopy and biopsy. Dr. Martin was on time, patient and professional in his dealings. Gave a clear explanation of findings and advised regarding management. He listened carefully and dealt with all my concerns.

Reply from John Martin
12 Aug 2026
avatar-image

Thank you for your feedback. I am delighted that you had a positve experience. Best Wishes. John Martin

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Skill Endorsements

Dr John Martin: I have known John for over 20 years and I can say that he is a remarkable gastroenterologist with extensive experience in the field. His dedication and commitment is widely appreciated. He is first class endoscopist and bowel cancer screener. He is well liked and highly respected by his patients and colleagues. I highly recommend him and it is a my pleasure to work alongside.

28 Nov 2025
Endorsed for
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
Video Consultation
Stomach / Abdominal Pain

Dr Akeel Alisa

Dr Akeel Alisa

Gastroenterologist
Is a colleague

Dr Martin is a well respected GI specialist with a wealth of knowledge and a reputation for providing great service to his patients

22 Jul 2025
Endorsed for
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
Irritable Bowel Syndrome (IBS)

Dr. Syed Hassan

Dr. Syed Hassan

Respiratory Doctor
I have looked after their patients

John is a highly experienced and skilled gastroenterologist and colonoscopist, with a wealth of knowledge. He is an excellent colleague.

03 Dec 2024
Endorsed for
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
Irritable Bowel Syndrome (IBS)

Dr John O'Donohue

Dr John O'Donohue

Gastroenterologist
Is a colleague

John is an expert colonoscopist and bowel cancer screener. He is a superb endoscopy trainer who is always a pleasure to work with.

12 Apr 2024
Endorsed for
Inflammatory Bowel Diseases (IBD) such as ulcerative Colitis or Crohn's Disease
Irritable Bowel Syndrome (IBS)

Dr Adam Haycock

Dr Adam Haycock

Gastroenterologist
Is a colleague

FAQ

What are Dr John Martin's reviews like?

Dr John Martin's overall patient rating is 4.9 out of 5 stars on Doctify. This is based on 143 reviews.

What languages does Dr John Martin speak?

Dr John Martin speaks English

Where is Dr John Martin located?

Dr John Martin primarily practices at Cromwell Hospital, located at 164-178 Cromwell Rd, London, United Kingdom, SW5 0TU
See more locations

Does Dr John Martin accept new patients?

Dr John Martin generally accepts new patients.

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