American Dental Association Member Directory is a directory from the American Dental Association that allows the public to search for dentists by geographic location and by dental specialty.
American Medical Association Physician Select Doctor Finder provides information on virtually every licensed physician in the United States and its possessions, including more than 650,000 doctors of medicine (MD) and doctors of osteopathy or osteopathic medicine (DO).
Administrators in Medicine (AIM) Doc Finder allows users to search for licensed physician's by state. There are also links to state medical boards as well as links to other organizations that govern physicians.
Hospitalcompare.hhs.gov find and compare the quality of care that hospitals provide for certain health conditions and procedures.
Washington State Health Professions Credential Lookup System is a database from that the Washington State Department of Health that allows users to search for credentials of all health professionals who are licensed by the state of Washington.