Primary care physician will oversee your overall medical care

Your primary-care physician should be someone who will coordinate and oversee your overall medical care, referring you to a specialist only if needed. It is not usually a good idea to consult the "top" specialist for every problem, though this seems to have become fashionable these days- for example, rushing to a neurologist for a headache such a step can actually lead to your getting poor care! Specialists often order unnecessary tests (which could be expensive and painful) to rule out rare diseases (after all, they are specialists, and they cannot afford to overlook any possibility, however, remote it may be, while making a diagnosis!).