Cardiology is the study of the heart. Cardiology is a branch of medicine that deals with disorders of the heart and the cardiovascular system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease, and electrophysiology.
Therefore, while a general cardiologist may be involved in long-term patient care they do not perform procedures or surgeries. You might be recommended an interventional cardiologist in case of non-surgical procedures like placing coronary stents or endoscopy which is actually a catheter intervention and not a surgery.