Nocturnist
A nocturnist is a hospital-based hospitalist (see hospital medicine) who only works overnight. Most nocturnists are trained in internal medicine or family medicine.[1] However, there are nocturnists trained in other specialties, such as pediatrics. The main role of a nocturnist is to admit patients into the hospital from an emergency department, and to care for previously admitted inpatients through the night.[2] Nocturnists differ from on-call doctors in that they work exclusively at night, rather than being on-call and also working daytime shifts.[3] As of 2020[update], about half of teaching hospitals in the United States staff nocturnists,[1] and a 2018 study reporting 76.1% of adults-only hospitals, 27.6% of children-only hospitals, and 68.2% of combined hospitals had nocturnists.[4]: 4