Daughter, your father's behavior is very typical of an active alcoholic. In fact, I've heard almost those exact same words many, many times. And the doctors have treated patients like him before, and they know what to do. It's good that you and your mom gave them his history.
Unfortunately, unless your father gets sober, and gets the treatment he needs, this scenario will be repeated many times in the future. I don't mean to scare you, but I want you to realize the seriousness of the situation and prepare you for what's ahead. It's very important for him to stop drinking.
Have you discussed all of this with your mom? How does she seem to be handling it?