He probably has a couple of upper level degrees. I use to work at the Medical College of Virginia in the Biochemistry Department. We had a student who graduated in 4 years with his Medical Degree and his Ph.D. in Biochemistry. He was the first to do both in 4 years. Usually those who were going for dual degrees put off their internships a year to finish the Ph.D.
He did it by pretty much living in the lab when he wasn't in classes. He would start his experiements and set timers to wake him at the different points he needed. We would come in very often to find him asleep on the conference room table. So obviously a really science nerd. I kind of picture Dr. Klein like that - going for several degrees at one time.
