I'm not in this field but O*net may be a helpful resource that can provide job description, skills, education, salary, etc.. You can also search on related careers using the "Career Cluster" drop down to compare and contrast salaries and education requirements. Here's a link to results for a search using medical & rehabilitation.
The O*NET Program is the nation's primary source of occupational information. Central to the project is the O*NET database, containing hundreds of standardized and occupation-specific descriptors on almost 1,000 occupations covering the entire U.S. economy. The database, which is available to the public at no cost, is continually updated from input by a broad range of workers in each occupation. The Occupational Information Network (O*NET) is developed under the sponsorship of the U.S. Department of Labor/Employment and Training Administration