Whats the difference between a nurse assistant and a medical assistant?

One receives a two weeks training, the other receives a three weeks training.

As far as I know the nurse assistant actually does back office things, such as perhaps drawing blood, taking blood pressure, etc. to assist the nursing staff. A medical asst. often does insurance billing, etc. and other administrative work. I was called for a job one time and it was to run the office of the medical practice (which is my field). I later found out the job was advertised as looking for a medical asst. If I had read this, I would never have applied; I would have thought it was partially back office work. If you are applying for a job, you might look for any certification requirements, such as CNA, which is usually back office work assisting the nursing staff. Usually administrative work either requires a degree or experience in insurance billing, transcribing, etc. With knowing the job requirements or any certification requirements, it is hard to tell what a job wants just by the title.

A nurse's assistant is required to have very little education... i'm not even sure they have to have an associate's degree... but they must meet certain requirements, whereas a medical assistant, or a physician's assistant, must receive a master's degree at minimum... having 6 or more years of training... a physician's assistant is below a doctor, but higher than a nurse. They must be under supervision of a physician, but are allowed to do many things physicians do...