You would have to do more research and see what your state requires. In Texas, you don't need a certification to work as an MA (private practice). However, if you want to work within a larger hospital system, they usually have the resources to pay for your certification class and any subsequent training.
In my case, I was hired as an MA (no certification), but by the end of 6 mo's had gotten my CMA, BLS, and phleb certifications. Just see what your state requires and go from there.