radiologist (n.)
- anesthesiologist
- cardiologist
- chiropodist
- dermatologist
- geriatrician
- gerontologist
- gynecologist
- immunologist
- internist
- neurologist
- obstetrician
- oculist
- ophthalmologist
- orthopedist
- otolaryngologist
- otologist
- pathologist
- pediatrician
- pediatrist
- podiatrist
- psychiatrist
- radiobiologist
- radiochemist
- serologist
- specialist