8. Gastroenterology
The study conducted by the Lewin Group in 2009, predicted that America would need 1,550 additional gastroenterologists by 2020 because of the growing need for colorectal cancer screening. Although doctors recommend that people older than 50 years take a regular screening for colon and rectum cancer, which is the second most prevalent cause of cancer deaths in America, surveys show that many patients don’t follow physicians advice. Gastroenterology, the number 8 in our list of most in demand medical specialties in America is fourth highest earning specialty with an average annual wage of $380,000.