physician assistants是什么职业

1.Any nurse who graduated from 4 years college for major nurse and got two years advanced credit in school (something like master) should be a physician assistant.The medical term for them is Nurse practitioner.
2.Any medical school student who just finished a two-year program(if another two years he could be a real doctor,what a stupid thing) shoud be physician assistant.
physician assistants always do the garbage works and doctor make big money.One of my friend have been doing that six years ready.
Any way the pay is not bad,around $120,000 a year.