Best Doctors, Inc., is a Boston-based company that rates physicians. Its approach is unique. The company asks practicing physicians what specialists they would go to if they needed to see a doctor. Best Doctors then verifies these recommended doctors' licenses and board certifications and checks for any disciplinary actions against them. The company then asks the doctors a series of questions about their experience, practice, and research. BUSINESS NORTH CAROLINA lists doctors in the state who made the list in twenty-one specialties, including cardiovascular, infectious disease, nephrology, and ophthalmology.