American Academy of Sleep Medicine (AASM)
http://sleepeducation.com/find-a-center
Professional information on AASM-accredited center and laboratory members.
Verify accreditation status by contacting the AASM National Office at (630) 737-9700
or accreditation@aasmnet.org.

American Board of Sleep Medicine
http://www.absm.org/sleepmedicinespecialty.aspx
Click on "Verification of Diplomats" for names of board certified sleep specialists.

American Academy of Dental Sleep Medicine (AADSM) http://www.aadsm.org
A searchable directory of dentists who specialize in treating certain sleep problems.