A cardiologist is a doctor who specializes in treating conditions and diseases in the cardiovascular system. The cardiovascular system consists of blood, blood vessels and the heart. They treat heart attacks, high blood pressure, heart failure etc.

In India, the average salary of a cardiologist is around 28 LPA. You can go to the following link for more information:

https://www.careers360.com/careers/cardiologist

I hope this helps.