Organizations

AARC Online (American Association for Respiratory Care)
American Academy of Allergy, Asthma & Immunology
American Academy of Family Physicians
American Academy of Pediatrics
American Cancer Society
American College of Chest Physicians
American College of Physicians
American College of Surgeons
American Heart Association
American Hospital Association
American Hospital Directory
American Lung Association
American Medical Association
American Society of Clinical Oncology
American Thoracic Society
Association of American Medical Colleges (AAMC)
Associations, Societies & Organizations (Nursing.net)
Hospital Web -- Global Hospitals on the World Wide Web (not including USA)
Hospital Web -- USA Hospitals on the World Wide Web
Joint Commission for the Accreditation of Healthcare Organizations
National Organization for Rare Disorders (inludes links to a list of organizations for a variety of rare diseases)
Societies and Associations (MedWebPlus)
Texas Hospital Association
Texas Medical Association
World Health Organization