- Renowned surgeon known for his expertise on liver transplantation, Chronic liver disease and hepatopancreatobiliary (HPB) surgery and performed more than 3000 liver transplant surgeries so far
- In Dec 1997, a team led by him has done successful liver transplantation for a five-day-old girl, which made him an entry into the Guinness Book of Records in 2000
- Carried out the first living related Liver Transplant on a patient with acute Liver Failure in the UK
- Successfully done a liver transplant for a four-and-a-half-year-old girl suffering from a terminal stage liver disease
- Participated as part of a team from King's College Hospital, London which did liver transplant(s) six times for a patient to save her life by performing a bone marrow transplant
- A team led by him has successfully done Swap liver transplantation on Adults (first of its kind in India), at Global Hospitals & Health city, Chennai
- Research interest is in the field of liver regeneration and harnessing its potential in making liver surgery safer for liver donors, liver recipients and for patients with advanced liver tumors