Internal medicine physicians are specialists who apply scientific knowledge and clinical expertise in order to diagnose, treat, and practice compassionate care for adults across the spectrum from health to complex illness.
Simply put, internists are Doctors of Internal Medicine. You may see them referred to by several terms, including "general internists," "internists" and "doctors of internal medicine." They are not to be mistaken with "interns," who are doctors in their first year of residency training.
Internists are not "family physicians, although internists may act as primary care physicians", "general practitioners," or "family practitioners", whose training is not solely concentrated on adults and may include obstetrics, surgery and pediatrics.