It seems to me that you should be covered under Mass Health. On the Mass Health website it indicates that it includes Medicaid and CHIP. I'm guessing that you are under CHIP and there is an age restriction there and that you probably now have to apply for Medicaid instead.

I would think that would be all that you would need. It should cover everything, but you should confirm that.

I would look at your options on this site:

MassHealth