The American Board of Medical Specialties (ABMS) recognizes 24 medical specialties in which physicians can pursue additional training and education to pursue board certification. One of these specialties is Internal Medicine, of which Pulmonology (lung disease specialist) is a subspecialty.
The American Board of Medical Specialties recognizes Family Medicine as a distinct discipline requiring an additional three years of training for doctors who wish to become Board Certified in this field. Family Medicine doctors are usually primary care providers (PCPs) [formerly general practitioners, or GPs] for the entire family.
A Nuclear Medicine physician is a doctor with three years additional training in advanced uses of radiopharmaceuticals to evaluate pathologic conditions of the body. Nuclear Medicine includes molecular imaging utilizing imaging systems to detect diseases or response to therapy.