"She is the doctor, not me."
Translation:Ea este medicul, nu eu.
Some people use the masculine form in a gender-neutral way. This is probably because:
1. it's shorter
2. some feminine names for professions sound ridiculous
3. it seems less of a hassle to use gender-neutral words where possible
I don't know whether this is something relatively recent or if it's more of a class divide (just yesterday, I saw a native speaker's flaming comment, which at some point mentioned that "only peasants use gendered words for professions" :) ).