I think it depends on what your wife would
Like to do? For example most of the jobs I have worked at required me to preform front and back duties. I do ekg, labs, vitals, assist minor procedures, poc testing, abi's, pft, med refills, (non narcotic) with provider authoritization. But I can also work the front schedule appt., verify insurance, authorizations medical records the whole works!
I would say become an MA if she ever gets tired of working the front she can always work the back.