The custom of having for medical attendant one of the leading physicians of the day, if not actually the most prominent medical scientist of the time, which had obtained at Rome during the thirteenth century, was maintained at Avignon during the three-quarters of a century in which the Papal See had its seat there…The distinct tendency of the Popes to keep in touch with the best men in medicine and surgery in their time is well illustrated by the case of Guy de Chauliac. This great French surgeon and professor at the University of Montpelier is hailed by the modern medical world as the Father of Modern Surgery. There is no doubt at all of his intensely modern character as a teacher, nor of his enterprise as a progressive surgeon. Few men have done more for advance in medicine, and his name is stamped on a number of original ideas that have never been eclipsed in surgery. After studying anatomy very faithfully, especially by means of dissections, in Italy, where he tells us that his master at Bologna, Bertrucci, made a larger number of dissections scarcely more than thirty years after the supposed Papal decree of prohibition, he returned to Montpelier to become the professor of surgery there, and introduced the Italian methods of investigation into the famous old university.
At this time the Popes were at Avignon, not far distant from Montpelier. From them Guy received every encouragement in his scientific work. He insisted that no one could practice surgery with any hope of success unless he devoted himself to careful dissection of the human body. If we were to believe some of the things that have been said with regard to the Popes forbidding dissection, this should have been enough to keep the French surgeon from the favor of the Popes, but it did not. On the contrary, he was the intimate friend and consultant medical attendant of two of the Avignon Popes, and was the chamberlain to one of them. The good influence of Chauliac on the minds of the Popes is reflected in their interest in the medical department of the University of Montpelier. About this time Pope Urban VI. founded the College of Twelve Physicians at Montpelier. He was an alumnus of the university, and had been appealed to to enlarge the opportunities of his Alma Mater.
James J. Walsh, The Popes and Science (1908)