Interesting game, there are heaps of great ideas in here and the concept of the doctor itself is really good, a playtrough for one ending is enjoyable. The game has some issues, the endings feel very empty and not rewarding at all; The doctor claims to be this larger than life entity but, regardless of how much he says so it does not feel like it.
The part with the questions and tests is fun since it let's you customize the experience but then again, the result you get is pretty inconsequential to it all and it feels a little arbitrary.
I did notice one of your other games use AI stuff and I think I spot some in here (may be wrong), personally not a big fan of that and it makes me question wheter or not I should praise certain aspects of the game...
Regardless, I feel that with a little of work on the narration, the visuals and the endings, this can be a solid experience since the plot has good ideas and the foundation is solid enough.
Keep up the good work!