Finding a Sleep Doctor or a Sleep Center can be one of the most important steps in resolving your sleep difficulties.
The American Board of Sleep Medicine is the medical board that certifies sleep physicians and researchers as "Board Certified" in Sleep Medicine. They maintain a searchable list of Board Certified Sleep Specialists by name. There are approximately 1500 Diplomates of the Board of Sleep Medicine, which has been in existence since 1978.
The American Academy of Sleep Medicine is a professional organization for sleep physicians and sleep centers/labs. They are also the recognized accreditation body for the voluntary accreditation of Sleep Centers and Labs.