Thanks for the question! In reviewing the Georgia Tech website, they currently offer a Doctor of Philosophy (Ph.D.) in Robotics. The Ph.D. is a doctorate degree but it is not an "M.D." which is what medical doctors earn upon the completion of medical school. I wanted to mention this to minimize your confusion.
On the admissions page of the Ph.D. program, it states that an applicants must have an earned bachelor's degree first: http://phdrobotics.gatech.edu/requirements.
You may be interested in the looking at the bachelor's degrees offered through their College of Engineering: http://www.gatech.edu/academics/bachelors-degree-programs.
The website Science Buddies has some great information on what robotics engineers do:
Please continue to post questions and best of luck!