Alan E. Nourse has 3 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is Star Surgeon.

X Minus One premiered in April 1955 on NBC and ran until January 1958. Like its predecessor series, Dimension X, X Minus One featured stories by the greatest names in modern science fiction: Ray Bradbury, Robert Heinlein, Clifford Simak, Robert Bloch, and many more.
Public Domain (P)2012 BN Publishing

X Minus One premiered in April 1955 on NBC and ran until January 1958. Like its predecessor series, Dimension X, X Minus One featured stories by the greatest names in modern science fiction: Ray Bradbury, Robert Heinlein, Clifford Simak, Robert Bloch, and many more.
Public Domain (P)2012 BN Publishing

These are the adventures of Dal Timgar, born on a planet of a distant star, who attempts to become a qualified physician of Hospital Earth. This exciting science-fiction story is a selection of the Junior Literary Guild. When Dal Timgar, of all his medical class, was denied assignment to a general practice patrol ship going out from Hospital Earth to serve the medical needs of the Galactic Confederation, it seemed to him that his eight years of study in the great medical center of the galaxy had ended in failure. He had worked hard and stood at the head of his class, but Dal was different from his medical colleagues in one important way. Born on a planet of a distant star, he was the first son of an alien race to attempt to become a qualified physician of Hospital Earth.
Public Domain (P)2011 Audible, Inc.