Dr Nadir Abbas

Dr Nadir Abbas is an award-winning NHS Consultant and internationally recognised researcher who brings world-class expertise in gut and liver disorders to House of Health as Director of Gut & Liver Private Services in Birmingham. He is a Consultant in GI and Liver Medicine at the University Hospital Birmingham NHS Trust.  With a PhD from the University of Birmingham, Dr Abbas has undertaken extensive research in Primary Biliary Cholangitis (PBC) and has authored the first British guidelines on managing liver cirrhosis in patients undergoing major surgery. His research has been published extensively in leading peer-reviewed journals, and he regularly presents at international conferences, shaping the future of hepatology and gastroenterology. Dr Abbas has served on international consortiums including the British Association for the Study of the Liver (BASL), where he actively contributes to advancing liver disease care across the UK. His expertise is sought by multiple pharmaceutical companies as a specialist advisor, influencing the development of next-generation treatments. He is also involved in education and is very involved in the training and mentorship of the next generation of gastroenterologists and hepatologists. At House of Health, Dr Abbas leads a specialist multidisciplinary team including: • Expert dietitians specialising in gut and liver nutrition • Specialist radiologists for advanced imaging • Gut-directed hypnotherapists for functional disorders • Experienced GPs for integrated care Dr. Abbas treats a wide range of conditions including: Liver Conditions: • Fatty liver disease (MASLD/NAFLD) and metabolic liver disease • Autoimmune liver diseases (Primary Biliary Cholangitis, Autoimmune Hepatitis, Primary Sclerosing Cholangitis) • Viral hepatitis (Hepatitis B, Hepatitis C) • Liver cirrhosis and its complications • Alcohol-related liver disease • Drug-induced liver injury • Hereditary liver conditions (Haemochromatosis, Wilson's disease, Alpha-1 antitrypsin deficiency) • Abnormal liver function tests requiring investigation • Pre-surgical liver assessment Gastrointestinal Conditions: • Inflammatory bowel disease (Crohn's disease, Ulcerative Colitis) • Irritable bowel syndrome (IBS) and functional gut disorders • Gastro-oesophageal reflux disease (GORD) and Barrett's oesophagus • Coeliac disease and food intolerances • Chronic diarrhoea and constipation • Abdominal pain and bloating • Helicobacter pylori infection • Pancreatic and biliary disorders • Small intestinal bacterial overgrowth (SIBO) • Nutritional deficiencies and malabsorption

"Evidence-based care tailored to each patient — taking the time to explain options and shared decisions."

1. 2005–2011
   MD · Medicine and Surgery

   Universitat de Barcelona

2. 2011–2015
   Residency · Gastroenterology

   Universidad de Navarra

1. 2015-09–2016-08
   Junior consultant

   Universitat de Barcelona Teaching Hospital — Gastroenterology

1. 1 Choose a slot
2. 2 Brief pre-consult form
3. 3 Consultation
4. 4 Follow-up note & plan

Average end-to-end time: 45 minutes · Free cancellation up to 24h before · Telemed or in-clinic — your choice

h-index: 10 · i10: 10

Selected publications

1. Validation of clinical scoring in Gastroenterology

   Dr Nadir Abbas, et al. · European Journal of Medicine, 2026

   DOI: 10.4780/euroclin.2026.0 · cited by 92

2. Long-term follow-up of Gastroenterology across

   Dr Nadir Abbas, et al. · European Journal of Medicine, 2025

   DOI: 10.9370/euroclin.2025.1 · cited by 78

• Patient education Patient guide to Gastroenterology 2026-03-07 · 10 min read
• Awareness When should you see a gastroenterology? 2026-01-12 · 8 min read