The gastroenterology section at Aga Khan University Hospital, Nairobi ensures excellent care for patients with disorders of the digestive system. We pride ourselves in the services we provide which include:​

  • An inpatient consultation service,
  • An outpatient consultation service,
  • Colonoscopy and endoscopy procedures,
  • Pediatric procedures including foreign body removal,
  • Patient and family education and support​​​.

Co​ntact us

To book an appointment, please contact:

+254 (0) 111 011 888 / +254 (0) 730 011 888 

To book an appointment online click HERE

​​Meet our Specialists 

Christopher Opio

Associate Professor,  Section Head and  Consultant Gastroenterologist and Hepatologist at Aga Khan University Hospital, Nairobi


  • Founding Fellow - FCP (ESCA) 2016
  • Fellow of Gastroenterology (Yale University) 2011
  • MBChB (Makerere University) 1997
  • MMed (Makerere University) 2003

Areas of interest

  • Hepatitis B
  • Hepatitis C
  • Liver cirrhosis
  • Metabolic diseases
  • Nutrition
  • All digestive diseases

Professional Associations

  • Member, American Society of Clinical Oncology
  • Member, East Central and Southern African College of Physicians
  • Registered and certified by the Uganda National Medical and Dental Council
  • Member, European association for study of Liver diseases
  • Affiliate Member of American Association for the Study of Liver diseases
  • Member African Association for study of liver disease
  • Member, Uganda Medical Association
  • Member, Uganda Society for Health Scientists
  • Member, African institute of quality assurance
  • Member, Uganda Gastro-enterology Society
  • Member, Uganda Neurological Association
  • Co-opted Member of endocrine society
  • Member, the H2U research group
Dr Opio is also a faculty at Aga Khan University in Nairobi

Om Parkash

Associate Professor and  Consultant Gastroenterologist, Hepatologist and Endoscopist at Aga Khan University Hospital, Nairobi


  • MBBS (1999/2000)
  • FCPS (Med) 2006
  • FCPS (2010)
  • MSc clinical research (2010)

Areas of Interest

  • Interventional endoscopy
  • Hepatobiliary interventions (ERCP/EUS),
  • Luminal stenting
  • Emergency bleeders (upper and lower GI)
  • Screening colonoscopy, IBD (UC/Crohn's disease)
  • Viral hepatitis
  • CLD/decompensation cirrhosis (ascites, SBP, variceal bleed, HCC)
  • Functional GI disorders.

Professional Association

  • Pakistan Society of Gastroenterology
  • American College of Gastroenterology
  • American College of Physicians
  • American Association for the Study of Liver Disease
  • Pakistan Society for Study of Liver Disease
  • Pakistan Society of Hepatology.
Dr Parkash is also a faculty at Aga Khan University in Nairobi​


Amos Mwasamwaja

Senior Instructor and Consultant Physician, Gastroenterologist, Hepatologist and Interventional Endoscopist at Aga Khan University Hospital, Nairiobi


  • MSC. Medical Gastroenterology & Hepatology (Muhimbili University of Health and Allied Sciences (MUHAS) Tanzania 2020
  • MMed in internal Medicine (Kilimanjaro Christian Medical University College, Tanzania) 2013
  • Certificate of Gl diagnostic and therapeutic endoscopy, Radboud University Medical Center,Nijmegen. The Netherlands - 2012
  • MD 2007 Kilimanjaro Christian Medical College (KCM-College), Tanzania 2007

Areas of Interests

  • Screening and Prevention
  • Gastrointestinal Malignancy
  • Neurogastroenterology
  • ERCP
  • Endoscopic Ultrasound
  • Viral Hepatitis
  • Metabolic Associated fatty Liver Disease (MAFLD)

Professional Associations

  • Member of Tanzania Gastroenterology and Endoscopy Society (TAGES)
  • Member of Association of Physician Tanzania (APHYTA)
  • Member of the World Endoscopy Organization (WEO) .
  • Member of International Christian Medical and Dental Association (ICMDA).
  • Member of the European Society of Medical Oncology (ESMO)
  • Member of The African Esophageal Cancer Consortium (AfrECC)
Dr Mwasamwaja is also a faculty at Aga Khan University in Nairobi​