Cardiology Specialties: Interventional, Electrophysiology, and More
June 27, 2026
Cardiology is one of the most specialized fields in internal medicine, and the term "cardiologist" covers providers with very different skills and tools. Understanding the subspecialties helps you know what type of cardiologist your condition actually calls for.
General (Non-Invasive) Cardiology
General cardiologists diagnose and manage heart conditions non-surgically — using medications, lifestyle guidance, and monitoring. They interpret EKGs, stress tests, echocardiograms, and Holter monitors. This is typically the first cardiologist you'd see for a new heart concern, and for many patients, general cardiology is the only subspecialty needed.
Interventional Cardiology
Interventional cardiologists perform catheter-based procedures — most commonly cardiac catheterization, coronary angiography, and percutaneous coronary intervention (stent placement). These are minimally invasive procedures done through blood vessels rather than open surgery. Interventional cardiologists are activated in heart attacks when a blocked artery needs to be opened quickly.
Electrophysiology (EP)
Electrophysiologists specialize in heart rhythm disorders — arrhythmias, atrial fibrillation, ventricular tachycardia, and heart block. They perform ablation procedures (eliminating abnormal electrical pathways), implant pacemakers and defibrillators (ICDs), and manage patients on antiarrhythmic medications.
Heart Failure and Transplant
This subspecialty focuses on advanced heart failure, cardiomyopathy, and evaluation for mechanical assist devices and heart transplantation. Browse cardiology-related taxonomy codes through the DoctorDataHub specialty index to find all registered cardiologists in your state.