A Medicare Supplement (Medigap) policy is health insurance sold by private insurance companies to fill the gaps in Original Medicare Plan coverage. Medigap policies help pay some of the health care costs that the Original Medicare Plan doesn't cover.
Internal Medicine encompasses the care of all adults, healthy and sick. Internists (as all doctors who complete an internal medicine residency are called) can be generalists or subspecialists, like cardiologists or rheumatologists. If you choose not to subspecialize, you are known as a General Internist.
General internal medicine physicians, or internists, are primary-care doctors who perform physical exams and treat a wide spectrum of common illnesses in adult men and women. One of every four physicians in the U.S. is an internist, many of whom are certified in one of 19 subspecialties, including cardiology, infectious disease and medical oncology.