Names of people who work in a hospital?

Hospitals have a number of job opportunities. Most people associate hospitals with doctors and nurses, but there are also a number of different kinds of technicians who give the patient X-Rays or conduct certain medical tests like mammograms. As for doctors, hospitals usually have specialists-- some of them are surgeons, while others mainly do diagnostic work in their particular area of expertise. Among nurses, there are nurse-practitioners, operating room nurses, surgical nurses, licensed practical nurses, etc. Hospitals also employ certified nursing assistants, physician's assistants, and a wide range of office workers who do medical billing, register the patients, etc.