I'm looking for the word that describes the portrait style photos used to advertise yourself to the world. You often see these in the context of a law firm or theater artist profile. Would profile be an adequate term?
Portraits for self-promotion are called head shots. They are especially common in the entertainment, modeling, and publishing industries.
[EDIT May 08, 2013]
The general term is publicity photo. They are common in the entertainment, modeling, and publishing industries. Publicity photos take two major forms:
Note that head shot usually refers specifically to publicity photos, whereas environmental portrait refers to a broader genre of photography that includes fine art portraiture.