What do cardiologists do to make money?

Cardiologists primarily generate revenue through patient consultations, diagnostic tests, and treatments related to heart health. They often perform procedures such as echocardiograms, stress tests, catheterizations, and angioplasties, which are reimbursed by insurance companies. Additionally, many cardiologists may engage in research, clinical trials, or teaching roles, contributing to their income. Overall, their earnings can be significantly influenced by the complexity and volume of the services they provide.