Persons who stay in Norway for more than six months must, as a general rule, register as having moved to Norway and be registered in the National Register with a so-called birth number (f-number). Immigrants to Norway who plan to stay in the country for less than six months can be registered with a "d-number", necessary, for instance, for being issues a tax card. Concerns have been raised that immigrants, even with period of residence exceeding six months, may have difficulties in being registered with an f-number. This may have an impact on their access to rights, such as a GP.
