"Soția mea este doctoriță."
Translation:My wife is a physician.
Georg, the indefinite article is not necessarily....
either in English or German or Romanian you can use both phrases to express the same meaning:
my wife is doctor(physician) ... my wife is a doctor (physician) (in English)
meine Frau ist Ärztin ... meine Frau ist eine Ärztin (in German)
sotia mea este doctorita ... sotia mea este o doctorita (in Romanian)