Final answer:
To become a cardiologist, one must complete a college degree, medical school, a residency in internal medicine, additional cardiology training, and obtain a medical license after passing the required exams.
Step-by-step explanation:
To practice medicine as a cardiologist, several key requirements must be fulfilled. The necessary steps include earning a college degree, followed by completing medical school which typically lasts 4 years. After medical school, a physician must undergo a residency program in internal medicine, which commonly lasts three years, and then pursue additional training in cardiology for three or more years. Once this extensive educational and clinical training is complete, the physician must pass a stringent examination to become a board-certified cardiologist. Additionally, a valid license to practice medicine is essential, which involves passing medical licensing exams and fulfilling state-specific requirements.