Hi Secret,
When I first went to T, he had the office suite on his own. Now he shares it with another T. I make my appointments with him only, and I don't ever even see the other T. I just know she's there because I saw her cards and her door was closed one week.
I wouldn't mind if he were in a group as long as I saw only him. What I would mind is if I had to go through a receptionist to make appointments or speak to him. That would definitely not work for me.
If I were shopping for a new T I would try to get a personal recommendation from someone. I would also try to make sure that the T practiced the type of therapy I am comfortable with.
Best of luck.
Peace