Number employed: 9,500 What they do, according to O*NET: Diagnose and treat diseases and deformities of the human foot.Number employed: 113,000 What they do, according to O*NET: Examine, diagnose, and treat diseases, injuries, and malformations of teeth and gums.Number employed: 28,490 What they do, according to O*NET: Diagnose, treat, and help prevent children's diseases and injuries.Number employed: 37,820 What they do, according to O*NET: Diagnose and provide non-surgical treatment of diseases and injuries of internal organ systems.Number employed: 389,180 What they do, according to O*NET: This is a catchall category for medical specialties not included in other occupational groups. Some of those specializations include immunologists, neurologists, pathologists, and radiologists.Number employed: 114,130 What they do, according to O*NET: Diagnose, treat, and help prevent diseases and injuries that commonly occur in the general population.Number employed: 25,630 What they do, according to O*NET: Diagnose, treat, and help prevent disorders of the mind.Number employed: 18,590 What they do, according to O*NET: Provide medical care related to pregnancy or childbirth and diagnose, treat, and help prevent diseases of women.Number employed: 4,830 What they do, according to O*NET: Perform surgery and related procedures on the hard and soft tissues of the oral and maxillofacial regions.Number employed: 34,390 What they do, according to O*NET: Treat diseases, injuries, and deformities by surgical methods.Number employed: 31,060 What they do, according to O*NET: Administer anesthetics prior to, during, or after surgery or other medical procedures.