"Good morning, doctor! How is doctor today?"
You should use "bestämd form" doktorn
in both cases above. And some old people can use this kind of expression from time to time. In 25 years it will probably not exist anymore. If a young person says it sounds very sarcastic.
Thanks, she's doing quite well.
But you don't answer about yourself in 3rd person. I think you could have done it 50 years ago. But these days only people with schizophrenia sometimes talk about themselves in 3rd person, like in other countries as well. Actually I don't know any language where you answer about yourself in 3rd person.