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Simon Greenfield: Consultant Gastroenterologist, Hertfordshire

Simon Greenfield: Consultant Gastroenterologist, Hertfordshire
Consultant Gastroenterologist, Hertfordshire: Simon Greenfield

Dr Simon Greenfield is a highly experienced Gastroenterologist in Hertfordshire and treats conditions affecting the gut including all forms of indigestion and stomach complaints, all types of bowel problems such as constipation and diarrhoea and pancreas/bile duct problems.

About Simon Greenfield, Consultant Gastroenterologist

Whilst at St Thomas’ Hospital Dr Simon Greenfield, MB BS MD FRCP, completed his MD thesis on inflammatory bowel disease before completing his training at UCH and the Whittington Hospital, North London.  

Previously, he was awarded by the British Society of Gastroenterology a travelling fellowship to the gastrointestinal unit of the Medical University of South Carolina; this  was a valuable learning experience.

Simon has been a consultant since 1996 and has a large practice in Hertfordshire seeing over 1,500 patients annually for consultation. He is a highly skilled endoscopist practising all forms of diagnostic and therapeutic (such as polyp removal) endoscopy and performs gastroscopy (300 annually), colonoscopy (250 annually) and ERCP (100 annually).  

He fully participates in clinical audit to ensure his procedures are carried out to the exacting standards laid down by the British Society of Gastroenterology. When meeting a new patient his philosophy is to take a detailed history of their problems and in particular to focus on any areas of diet that might be influencing your symptoms. If required he may undertake a gastroscopy/colonoscopy but believes that this is only a small part of the treatment process and that it is important to take a holistic view when treating someone with gut symptoms. Apart from medication, dietary advice plays an important part in his treatment strategy.  

Simon is head of the practice of Hertfordshire Gastroenterology. He is also Chief Medical Officer to the Taymount Clinic that specialises in faecal microbiota transplantation for people with Clostridium difficile infection and microbial gut dysbiosis.


Gut conditions and treatments offered by Hertfordshire Gastroenterology


This everyday condition causes countless problems to many people. Dr Greenfield, as a stomach doctor, is considered an expert in managing this symptom.


Constipation/diarrhoea/rectal bleeding

These symptoms can be quite distressing to patients. Dr Greenfield has published widely on this topic.


Ulcerative colitis and Crohn’s disease

Simon manages many patients with this condition in Hertfordshire, ensuring his patients get access to the latest novel biological treatments.



Dr Greenfield considers himself an expert in this difficult endoscopic procedure that may involve removal of gallstones or stenting (placing a drainage tube) of the bile duct to relieve jaundice.    

Liver disease

Simon manages numerous patients with abnormal liver tests, often detected by chance on routine blood tests or following an insurance medical.


Dr Greenfield also performs the following examinations at Hertfordshire Gastroenterology:


Areas covered for treatment by private gastroenterologist in Hertfordshire

  • Harpenden
  • Hitchin
  • Welwyn Garden City

Research interests: endoscopy, inflammatory bowel disease, colorectal cancer

Dr Greenfield has published widely on topics such as colorectal cancer, inflammatory bowel disease, constipation and endoscopy. 

He was Guidelines Editor for Gut (2010-2012) and as such was responsible for the reviewing and editing of all guidelines produced by the British Society of Gastroenterology (BSG), the organisation responsible for upholding the standards of UK gastroenterology.

He is a reviewer for Alimentary Pharmacology and Therapeutics.


Quality and accreditation

Dr Greenfield is Chairman to the Clinical Services and Standards Committee of the BSG the committee responsible for guidelines and revalidation of UK gastroenterologists. 

He is former chairman of the Independent Practice committee of the BSG, responsible for ensuring standards in UK private practice in gastroenterology, and a board member of FIPO (Federation of Independent Practitioner Organisations). 



1. The setting up and running of a cross-county out-of-hours gastrointestinal bleed service: a possible blueprint for the future.  Shokouhi BN... Greenfield  SM.   

Frontline Gastroenterology 2013;4:227-231

2.The use of symptoms to predict colorectal cancer site
Kent A, Greenfield SM
European Gastroenterology and Hepatology Review – 2011; 7 (2) 108-10


3. The impact of chronic constipation on quality of life in adults and children: A systematic review.   Belsey J, Greenfield SM, Candy D, Geraint M
Alimentary, Pharmacology & Therapeutics 2010;31:938-49


4. Prospective evaluation of the pharmacogentics of Azathioprine in the treatment of inflammatory bowel disease
Ansari A; Arenas, Greenfield SM, et al
Alimentary, Pharmacology & Therapeutics 2008;28:973-983


5. The Management of Constipation in Hospital Inpatients  Greenfield SM


BR J Hosp Med 2007;68:3:145-147



GMC Number:


Check this doctor’s GMC registration

Date of registration:

01 Aug 1985




Accreditation and admitting rights at private hospitals  

Dr. Simon Greenfield is an accredited consultant for the UK's leading private healthcare providers and private hospitals including Spire Healthcare and Ramsay healthcare.

Spire admitting rights


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Contact details

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Secretary: Linda Sibthorpe

Tel: 01438-286422 or 07947-803-034


Spire Harpenden Hospital, Ambrose Lane, Harpenden, AL5 4BP

Tel: 01582-763-191

Tuesday am for consulting and endoscopy


Pinehill Hospital, Benslow lane Hitchin, SG4 9QZ

Tel: 01462-422-822

Thursday afternoon for endoscopy and consulting


Emergency contact: 07947-803-034

Email for appointments: linda.sibthorpe@nhs.net


Web: www.hertsgastro.com



Treatments offered

  • Indigestion/ulcers

  • Constipation/diarrhoea/rectal bleeding

  • Ulcerative colitis and Crohn’s disease

  • ERCP

  • Liver disease

  • Gastroscopy

  • Flexible sigmoidoscopy

  • Colonoscopy


Qualifications and memberships


  • MB BS
  • MD
  • FRCP


Professional memberships



Places of work

Spire Harpenden Hospital, Ambrose Lane, Harpenden, AL5 4BP

Tel: 01582-763-191

Tuesday am for consulting and endoscopy


Pinehill Hospital, Benslow lane Hitchin, SG4 9QZ

Tel: 01462-422-822

Thursday afternoon for endoscopy and consulting


Queen Elizabeth II Hospital, Howlands Welwyn Garden City, AL7 4HQ

Tel: 01438-286422 

Mobile: 07947-803-034

Friday afternoon for consulting