The original Smurf Doctor was Papa Smurf but later it was changed into separate Smurf figure. This is a character, created by Peyo. Almost in every Smurf figure created by peyo, there is a stamp with label "Peyo W. Germany".
Smurf Doctor is very intelligent and has knowledges about medicine and health. He uses 4-5 books for his work and he is doing a great job.
Smurf Doctor is also popular as Dabbler Smurf, but it is only in the TV cartoon show, not in the comics.