grammer- how do i write a persons occupation next to their name ex: John Doe, Baker?

Answer 1

There are several options. You can say "the actor Robert De Niro" or "Paula, a nurse anesthetist." You can also say "restaurateur Pierre LeBlanc" or "Dr. Wilbur Wilkes, senior neurologist at City Hospital." All depends on the context.

Answer 2

If you're going to refer to John Doe who is a baker, you might say:

"John Doe, the baker, makes great bread."