Hospital Station (1962) - a collection of related novelettes. Sector General is the home of many strange creatures, including humans. It is a vast, sectionalized hospital, set up in space to care for all kinds of extraterrestrials including those that "breathe" methane gas, or live under water or in some totally alien environment. Radiation-eating lifeforms with acute indigestion, casualties of a human-alien war, a spaceship colliding with the hospital and a fear-maddened creature playing havoc with the gravity grids are just some of the challenges junior intern Conway must tackle while he struggles to reconcile his pacifist ideals with the harsh reality of practising medicine in space.

Medic
Sector General
Trouble With Emily
Visitor at Large
Out-Patient

All of these first appeared in New Worlds, from 1957 to 1960.