Registered nurses make up the largest occupation in healthcare, with 2.6 million jobs and an overall expected job growth rate of 22 percent, which is much faster than the national average across all professions. Registered nurse requirements include earning either a bachelor?s degree in nursing (BSN), associate?s degree in nursing (ADN) or a hospital diploma, passing the NCLEX and becoming licensed by their state. Registered nurses have a wide range of specializations available to them, from geriatric nursing and gastroenterology nursing, to critical care nursing and orthopedic nursing. Registered nurses may also go into teaching or hospital administration. The median registered nurse salary is $62,450.