If you are referring to a medical doctor with a specialty in cardiology, I would not think of it in terms of credits, but degrees. Read the below and follow through with the link provided.
It would take four years for The Bachelor's degree with completion of all prerequisite coursework required by medical schools and four years of medical school. Thus, eight years beyond high school completion. While many individuals who pursue a career as a physician major in Biology at the undergraduate level, many others come from a variety of other educational backgrounds. The best major to take should be based on a contingency plan. In other words, what happens if you do not go to medical school? What will you be able to do with the degree that you have, and will it provide you with a satisfying career or career path? You should meet with a career counselor at the college or university you attend for what options exist for you. The important issue is acquiring the appropriate prerequisites required for medical school. The student should have a strong background in the following areas.
Following the bachelor's degree, would be four years of medical school to obtain the MD or DO degree. There will also be an additional three or more years to complete the internship and residency requirements depending on the specialty.
For more detailed information concerning this request, click on the related links section (U.S. Department of Labor) indicated below this answer box.
Chat with our AI personalities