Im in school for medical office technology,certified for cmaa only i wanted ma,should i school for ma or lpn.?

am going to school for medical office technology,which includes medical administrative assistant,medical coder,medical transcriptions,medical assistant.really wanted something like medical assistant i don't get certified for ma only for medical administrative assistant i do some of the ma duties but just don't get certified for it. should i go for ma to get certified for it or just go for lpn.