American Osteopathic Association. Information on education and licensure as well as listings for accredited programs.

American Podiatric Medical Association. Information on the career, education, accredited colleges.

Association of American Medical Colleges, Liaison Committee on Medical Education.  Provides a list of all accredited U.S. medical schools.

Bioethics.Net.

Educational Commission for Foreign Medical Graduates.   Information on the USMLE and other certification requirements.

FREIDA On-Line.  Database of accredited U.S. medical residency programs, with detailed information.

MCAT.