Dentist! (Oral trouble)
Reading radiographs of the head, neck, mouth. Can work with ENTs or dentists and pathologists. Working with computers and imagery a lot.
2. Oral and Maxillofacial Pathology
Analyzing and determining pathology of the oral cavity (typically cancer, but other conditions, too). Work with books and microscopes a lot.
3. Buy Practices or Real Estate Space for Dental Offices
You'd be surprised how many dentists just turn into real estate people because they would rather own the office than the practice.