Yes, it would bother me. He's seen my name many times and, even though my email isn't my full name, my name attached to the email is. He's also seen my full name in announcements I send out to mailing lists and when I sent him links to my online pages because I wanted his feedback. I also gave him a few of my publications as a gift. My therapist has a good memory and my last name is short. I'd be a little upset if he still couldn't recall my last name after all these years.

Sorry about your situation. Perhaps you could let your therapist know how you feel and that he's got it wrong, if you want to.