The way I describe it is a cardiologist is a plumber and an EP (electrophysiologist) is an electrician.
Most heart care groups have one doctor that specializes in rhythm. When you call for an appointment, make sure you ask who is the best EP!
The heart rhythm doctor is called an Electrophysiologist (EP). They are a cardiologist that specialize in the rhythm of the heart. If you have not had tests for the heart palpitations the EP Dr will refer you for those.