Dr. Karl Kötschau Was The Secret Doctor Behind A Famous Experiment

Oct 26, 2016 · "Dr." is an abbreviation for "doctor", and either can be used in most situations. However, it is not idiomatic to say, eg, "Frank is a Dr. at Memorial Hospital", or "Joe is sick so I. I think when you use "Dr" or "Dr's" (with or without the period) as an abbreviation for Doctor, it's fine if used in an informal setting. After all, you are abbreviating the word "Doctor" in a generic.