Prof Sibal joined Indraprastha Apollo Hospitals, Delhi in 1997 as a Senior Pediatric Gastroenterologist and Hepatologist and established the division of pediatric gastroenterology and hepatology. He helped set up the first successful pediatric liver transplant program in India in 1998. The Apollo Transplant Program has been the busiest solid organ transplant program in the world since 2012. In 2016, 1440 solid organ transplants were performed across the Group.
In 2003, Prof. Sibal was elevated to the position of Medical Director of Apollo Hospital, Delhi. He was appointed as the Group Medical Director of the Apollo Hospitals Group in 2005. Professor Sibal is an Honorary Clinical Professor at Macquarie University, Sydney, Australia. He has more than ninety-five publications in medical literature, serves on the editorial board of three journals and has edited a text book of paediatric gastroenterology and hepatology.
In June 2005, he helped achieve the First International Accreditation of a hospital in India by Joint Commission International (JCI). Prof. Sibal served as the only Asian JCI Physician Surveyor from January 2008 to 2010. He currently is a member, Asia - Pacific Advisory Council of JCI. He was appointed as the Vice President of Global Association of Physicians of Indian Origin (GAPIO) in January 2017.
He served as a member of the Institute Body (IB) of the Postgraduate Institute of Medical Education and Research, (PGIMER) Chandigarh from 2009 - 2014. IB is the highest decision making body of PGIMER headed by the Union Cabinet Minister for Health and Family Welfare.
He has served on the Executive Council of the International Pediatric Transplant Association, The Asian Pan Pacific Association of Pediatric Gastroenterology, Hepatology and Nutrition and the Commonwealth Association of Pediatric Gastroenterology and Nutrition and has lectured extensively in India and abroad.
Prof. Sibal is the author of "Is Your Child Ready to face the World?" Exploring the crux of parenting, this book asks and answers whether your child is ready to face the world. The book has become a national best seller.
He lectures extensively in India and overseas on healthcare, pediatrics, leadership and parenting.