I would think that to call someone by their title instead of their first name would actually come across more professional than not!
I used to work in a an office with a large amount of both men and women. As soon as I was hired I was told I would be called Miss.. It ends up being the most helpful for everyone.
The next job. my boss calls me by my first name and in the beginong I was uncomfortable about it.. Unfortunately it doesn’t bother me so much anymore..