Sleep Medicine Physician
Somnologist
When people hear the title doctor, they think of a medical doctor. However, anyone who earns a PhD degree (Doctor of Philosophy) has the right to put Doctor in front of their name, whether their studies are in finance, chemistry or any other field.
a sonographer.
A gemologist studies gems.
A Radiologist is the title of the physician who specializes in using imaging technologies, including x-rays, to make diagnoses and treat disease.
Ornithologist
In the title of Raymond Chandler's 1939 novel, 'The Big Sleep' is a (hard-boiled) euphemism for death. If someone is sleeping the big sleep then they are dead.
Social Studies in Web 2.0
These individuals have earned the title of Doctor. They have completed a Bachelor's Degree and a Master's Degree and then completed their doctoral studies and completed and defended their dissertation. It is the highest level of education.
With a doctorate, the title would be doctor.
That will vary. If you have a PHD in physical therapy then it will be so. If you have a PHD in anything then your title will be doctor.
A vulcanologist
Doctor is abbreviated to Dr. when used as a title in conjunction with the person's name, but not when addressing the person by title only or when using doctor merely as a noun, not a title. For example: * Dr. Smith * Dr. and Mrs. John Smith * How are you, Doctor? * Margaret is a doctor too.