It’s not common knowledge, but there are actually three types of cardiologists. It’s worth knowing them to ensure that you book an appointment with the right specialist: Non-invasive cardiologists. This type sees patients in an outpatient setting, working to prevent heart-related conditions such as hypertension and heart failure and performing diagnostic tests like MRI imaging and exercise tests Interventional cardiologists. Commonly referred to as “invasive heart doctors.” Their work involves unblocking clogged heart arteries and doing other heart-related surgeries. Electrophysiologists. If most cardiologists specialise in the health of the heart muscle and vascular system, this one focuses on treating irregular heart rhythms