What term describes a doctor who becomes a specialist by meeting standards beyond those of getting a license and passing a test in the specialty area?

This would be a Board Certified Doctor

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.