Dr. Das is a pioneering cardiothoracic surgeon with landmark achievements:
- Performed extensive adult and paediatric cardiac procedures (CABG, valve replacements, ASD closure)
- Introduced congenital programs—Fontan and adult congenital surgeries
- Led minimally invasive and ECMO/LVAD/heart transplant initiatives at AIIMS
- Authored high-impact cardiothoracic research and received national awards for surgical innovation