I was hoping someone could answer this question for me. Are there various paths someone could take in IM to specialize. For example, to become a pulmonologist or a cardiologist etc. are there other paths to take than doing 3 yrs IM and then a fellowship? Are there combined programs or do you have to do fellowships? I have heard that many fellowships are research oriented for a portion of the fellowship. If someone has zero interest in research is there another route besides a fellowship that can be take to become a specialist? Thanks!