This chapter discusses about the professional life of cardiologist. Professional attributes describes their clinical skills, technological skills, guardian of best interests of the patient, remaining current with relevant technical knowledge and team player. A good cardiologist is perforce open-minded and innovative and has ability to identify areas of scientific interest requiring further investigation and to design and conduct research in the area of interest is yet another hallmark of a good cardiologist. Personal attributes describes the love of the profession, communication skills, empathy, humility and humanitarian concerns, respect for patient autonomy, respect for privacy and confidentiality, non-discriminatory treatment and personal commitment. Social attributes explains the commitment to promotion of good health and prevention of disease and cost containment.