In the USA, there are almost 700,000 physicians, so much so an entire day dedicated to showing them appreciation called, National Doctor's Day (March 30th) was created on October 30, 1990. Individuals in this audience are physicians, who are primarily concerned with the care of patients in the intermediate sense, between the care of nurses, and the critical care of emergency staff/ surgeons.
"I have a suspicion that he's converted to Judaism purely for the jokes." - Jerry Seinfeld. This audience is composed of those who chose dentistry as their profession.
A medical practitioner may not be a doctor per say but their work is just as important. This audience focuses on aiding physicians. Typical behaviors include providing health and treatment services to patients and diagnosing diseases. They may be seen researching occupations like nurse practitioner, EMTs or dietitians.
When a hospital runs out of maternity nurses do they have a mid-wife crisis? Individuals in this industry work in the field of nursing and are chiefly concerned with optimizing the care of patients and their quality of life during the healing process. They may be associated with organizations such as the ANA, NSNA and the NLN.
If you are looking for a group of those who work with pharmaceuticals then this audience is the right prescription for you. People in this audience distribute prescription medications. They typically fill prescriptions, advise patients about health, and work with insurance companies. They have past exposure to the PCAT and may have been researching companies like Johnson & Johnson and GlaxoSmithKline.
Benjamin Franklin, Agatha Christie and Coca-Cola inventor, John Pemberton all were pharmacists. It sure seems like the path to fame is through pharmacy. They may be researching pharmacy licenses and registration or looking for jobs in their field.