dgg@mit-athena.ARPA (David G. Grubbs) (05/24/84)
According to my handy Star Trek Concordance (Original edition, 1969): In the second pilot, Where No Man has Gone Before (not The Menagerie as was mentioned in a previous message), "Dr. Piper", the Ship's Senior Surgeon until replaced by Doctor McCoy, was played by "Paul Fix".