Dr.Johanseen is a doctor . She is the doctor of Stacey who is diagnosised with diabetes. It was mentioned in the book of the truth about stacey . The book created by both; Ann M. Martin and Raina Telgemier . She was scened fainting of her food in her former place where she lived: New York. In the restaurant with her friends. Then she went to the doctor and then Dr. Johanseen said: that she was diagnosised with diabetes. Later on, after the doctor's appointement,she went home. Then stacey's mom called one of Stacey's friends to excuse herself to the mother of Stacey's friend for the misunderstanding earlier at the restaurant. Stacey wanted to talk to her friend on the phone but at her friend's house, her friend was embarassed and frustrated so she said : no no no. So to put it in another way, stacey's friend's mom made up an excuse instead of telling her the truth and so stacey's mother understood except she did not know it was a lie.