The rankings on Shea Strauss's chart are not entirely fair. Dr. Pepper, the pride of Waco, Texas, is a perfectly satisfactory physician and a far better art historian than Dr. Zoidberg.
If I knew Doc Brown and The Doctor personally, I'd probably avoid them. A life of profitless adventure? I'll pass.
-via Tastefully Offensive
Dr. Frankenstein does have a MD or PhD, I think. He may be trusted with your life, since he can restore life to your dead body. On the other hand, he may put someone else's brain into it . . .