Adult nurse practitioners require significant formal education. Learn about the education, job duties and state requirements to see if this is the right career for you. Adult nurse practitioners provide medical care to patients from teen through the elderly. They must possess a master's degree, licensure, and possibly certification. The job growth outlook for nurse practitioners is very positive for the period of to Adult nurse practitioners ANPs are highly skilled and educated primary medical care providers who diagnose and treat a wide range of problems and prescribe medications.