what do internists do
What does an internist do. An internist is a physician specialized in the field of Internal Medicine who deals with medical conditions of the internal organs. An internist diagnoses and treats the diseases of various internal organs such as kidneys, liver, spleen, and adrenals to name a few.hat does an internist do. An internist is a physician specialized in the field of Internal Medicine who deals with medical conditions of the internal organs. An internist diagnoses and treats the diseases of various internal organs such as kidneys, liver, spleen, and adrenals to name a few.