Is there a specific title for wizards?

I’m writing a fantasy story and I have a wizard in it. His name’s Brad, and I’m wondering how a magical figure like him should be addressed. Mr. Brad seems a little lackluster, and Sir Brad wouldn’t make sense, since he’s not a knight.

To clarify, I’m looking for a title that pertains to wizards that I can put in front of Brad’s name, like Sir Brad. Here’s an example:

• "Ah, Mr. Brad, you’re looking well today," Bob said.
• "That’s (wizard term) Brad to you," he replied tartly.