Find a sleep medicine specialist. These are physicians (MDs and DOs) and PhDs who were certified in 2006 or earlier, by the American Board of Sleep Medicine (ABSM). It is a lifetime certification that does not expire. They have passed the exam, and displayed a comprehensive understanding of the diagnosis and treatment of sleep disorders. Note, the site states: “Doctors certified in sleep medicine during or after 2007 were not certified by the ABSM. For confirmation of these certifications please contact the board under which the doctor was certified.” This site lists diplomates by name, but no search function by city