Narayana Institute of Cardiac Sciences is a JCI and NABH accredited heart hospital situated in NH Health city Bangalore. This superspeciality flagship cardiac hospital of Narayana Health is one of the largest in the world and is equipped with 16 dedicated Cardiac Operation Theatres and 6 Digital Cath Labs of which one is a Hybrid, capable of performing both interventional cardiac procedures as well as complex heart surgeries.

Narayana Institute of Cardiac Sciences performs heart surgeries both on adults & children. This cardiac centre has dedicated critical care beds for post-operative care and performs Cath Lab procedures routinely. It also has 80 bed dedicated paediatric cardiac ICU, the largest in the world.

Narayana Institute of Cardiac Sciences specialises in complex cardiac surgeries & other cardiac procedures such as Pulmonary Endarterectomy for chronic pulmonary embolism, Aneurysm repairs, Electrophysiology, Endovascular interventions for aneurysms and radio frequency ablations, Valve repairs and ROSS procedures, Left Ventricular remodelling / Dor's procedure, device closure for ASD and VSD and Tetralogy of Fallot.

Thrombosis Research Institute in the hospital campus is a notable unit for research and has a number of scientists working in collaboration with TRI, London to develop a vaccine to prevent heart attacks.