Medius (Greek: Μήδιος; 4th-3rd century BC) a Greek physician who was a pupil of Chrysippus of Cnidos,[1] and who lived therefore probably in the 4th and 3rd centuries BC.
Galen says he was held in good repute among the Greeks,[2] and quotes him apparently as a respectable authority on an anatomical question.
[3] Like the other pupils of Chrysippus, he entirely abstained from bloodletting.
[3] He was, perhaps, the brother of Cretoxena, the mother of Erasistratus,[4] but could not have been much older.
Dictionary of Greek and Roman Biography and Mythology.