Comment by jleyank

the -ologists can be both, then. My academic experience in ancient times had them as medicine related PhD's, but I guess MD's can specialize in that area from a treatment rather than a research area. MD/PhD's are rare but quite valuable for research projects because they can see patient records wearing their MD hat, but interact with the research teams with their PhD hat. They tend to have mediocre bedside manners cuz they rarely see a bed, and they're sorta burned out coming of all that schooling.