You should see a heart cardiologist if you experience chest pain, shortness of breath, irregular heartbeat, or extreme fatigue. People with high blood pressure, high cholesterol, diabetes, or a family history of heart disease should also consult a heart specialist. Early visits help detect issues before they become serious. If you're over 40 and have lifestyle risk factors like smoking or obesity, regular checkups with a heart cardiologist can protect long-term heart health.