Dr. Krishna Subramony Iyer is a leading pediatric cardiac surgeon at Fortis Escorts Heart Institute in New Delhi, with over 40 years of experience. Renowned for his expertise, Dr. Iyer has performed over 10,000 surgeries on infants, children, and adults with congenital heart defects. He pioneered Northern India’s first dedicated pediatric cardiac care program at Escorts Heart Institute, setting a benchmark for cardiac treatment across the region.

Dr. Iyer's innovative techniques, such as the rapid two-stage arterial switch procedure, highlight his commitment to advancing paediatric cardiac surgery. He focuses on complex neonatal surgeries, addressing the needs of malnourished infants, and developing cost-effective care solutions for children in developing countries.

In addition to his clinical work, Dr. K S Iyer actively participates in numerous international organizations and contributes to research in the field, further enhancing the quality of cardiac care available for children in India and beyond.