Joseph:
The meforshim on that mishnah in Kiddushin are quite clear. The doctor who believes he is so great that he never needs to consult with another belongs in Gehinnom. The mishnah never maligned an entire profession. In fact, the Gemora (בבא קמא פ”ה א) explains on the posuk תנא דבי רבי ישמעאל ורפא ירפא מכאן שנתנה רשות לרופא לרפאות. You have a hard sell if you want to explain the mishna as knocking the medical field. The latter seems to be the gist of PBA’s comment. Completely inconsistent with the position of Chazal.