Please have your mother fire this doctor before he touches her again... As a patient you have rights... You are paying this man's salary and he can not speak to you like that and expect ot get away with it..If I came into work and yelled at my boss I would be fired wouldn't you?
You and your mother need to remember that you are his boss and that his behavoir was unacceptable...
I wish you and your mother the best of luck..