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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 15,449 ATS members (as of November 15, 2022) 15,048 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) 1312 2016 3328 1959 750 1369 41.14%
Behavioral Science & Health Services Research (BSHSR) 346 706 1052 849 305 203 19.30%
Clinical Problems (CP) 2378 2782 5160 3432 3432 1728 33.49%
Critical Care (CC) 3790 3004 6794 5514 3215 1280 18.84%
Environmental, Occupational and Population Health (EOPH) 457 818 1275 904 333 371 29.10%
Nursing (NUR) 130 69 199 179 118 20 10.05%
Pediatrics (PEDS) 1272 513 1785 1360 980 425 23.81%
Pulmonary Circulation (PC) 922 1683 2605 1999 691 606 23.26%
Pulmonary Infections and Tuberculosis (PI-TB) 1026 2158 3184 1937 568 1247 39.16%
Pulmonary Rehabilitation  (PR) 292 667 959 501 133 458 47.76%
Respiratory Cell and Molecular Biology (RCMB) 1008 1613 2621 1814 723 807 30.79%
Respiratory Structure and Function (RSF) 866 2024 2890 1921 539 969 33.53%
Sleep and Respiratory Neurobiology (SRN) 648 1009 1657 1003 394 654 39.47%
Thoracic Oncology 601 890 1491 1021 419 470 31.52%
Genetics & Genomics (GG): 1367 members
Medical Education (Med Ed) 3273 members
Terrorism & Inhalation Disasters (TID) 566 members
Members with NO Assembly Affiliation 401 members