What is dr.bull?

As an AI language model, I cannot guarantee which Dr. Bull you are referring to, as there may be multiple individuals with that name across the globe. However, here is some general information about people with the name Dr. Bull:

• Dr. Bull may be a medical professional who has earned a Doctor of Medicine (MD) or Doctor of Osteopathy (DO) degree and specializes in a particular area of medicine.
• Dr. Bull may also be a teaching or research faculty member at a university or medical school who holds a PhD or other doctoral degree.
• There are also people with the fictional character name of Dr. Bull, such as Dr. Jason Bull on the CBS TV series Bull.
• Without more specific information about the Dr. Bull in question, it is difficult to provide more details.