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Assembly Membership

When a person becomes a member of the American Thoracic Society he or she is entitled to become a "primary member" of one Assembly and "secondary member" of two additional Assemblies.  Of the 16,236 ATS members (as of November 12, 2019) 14,167 have declared a primary Assembly.  Please see the list below for the numbers of primary members, secondary, International and primary & secondary members in each Assembly:

Assembly Primary Members Secondary Members Primary & Secondary Members Primary & Secondary
Members
(U.S. only)
Primary Members
(U.S. only)
International Members Percentage of International Members
Allergy, Immunology and Inflammation (AII) 1307 1904 3211 1831 775 1380 42.98%
Behavioral Science & Health Services Research (BSHSR) 282 544 826 676 245 150 18.16%
Clinical Problems (CP) 2334 2328 4662 3066 1457 1596 34.23%
Critical Care (CC) 3475 3066 6541 5286 2891 1255 19.19%
Enviromental, Occupational and Population Health (EOPH) 478 741 1219 833 326 386 31.67%
Nursing (NUR) 114 63 177 156 101 21 11.86%
Pediatrics (PEDS) 1166 455 1621 1222 905 399 24.61%
Pulmonary Circulation (PC) 911 1656 2567 2002 695 565 22.01%
Pulmonary Infections and Tuberculosis (PI-TB) 873 1673 2546 1580 481 966 37.94%
Pulmonary Rehabilitation  (PR) 232 465 697 356 99 341 48.92%
Respiratory Cell and Molecular Biology (RCMB) 1076 1645 2721 1812 745 909 33.41%
Respiratory Structure and Function (RSF) 868 1800 2668 1707 505 961 36.02%
Sleep and Respiratory Neurobiology (SRN) 570 1065 1635 1016 344 619 37.86%
Thoracic Oncology 481 700 1181 759 328 422 35.73
Genetics & Genomics (GG): 1104 members
Medical Education (Med Ed) 2002 members
Terrorism & Inhalation Disasters (TID) 447 members
Members with NO Assembly Affiliation 2069 members
Last Reviewed: November 2019