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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 15,734 ATS members (as of May 15, 2019) 13,669 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:

Assemblyprimary membersSecondary Membersprimary & secondary membersprimary & secondary (U.S. only)primary (U.S. only)International MembersPercentage of International Members
Allergy, Immunology and Inflammation (AII) 1276 1866 3142 1780 747 1362 43.35%
Behavioral Science & Health Services Research (BSHSR) 267 522 789 643 227 146 18.50%
Clinical Problems (CP) 2282 2278 4560 2984 1412 1576 34.56%
Critical Care (CC) 3334 2982 6316 5064 2736 1252 19.82%
Enviromental, Occupational and Population Health (EOPH) 468 731 1199 824 330 375 31.28%
Nursing (NUR) 108 55 163 143 97 20 12.27%
Pediatrics (PEDS) 1085 436 1521 1131 834 390 25.64%
Pulmonary Circulation (PC) 867 1610 2477 1923 658 554 22.37%
Pulmonary Infections and Tuberculosis (PI-TB) 860 1632 2492 1519 462 973 39.04%
Pulmonary Rehabilitation  (PR) 219 461 680 352 95 328 48.24%
Respiratory Cell and Molecular Biology (RCMB) 1052 1596 2648 1754 734 894 33.76%
Respiratory Structure and Function (RSF) 831 1739 2570 1628 483 942 36.65%
Sleep and Respiratory Neurobiology (SRN) 572 1043 1615 1001 344 614 38.02%
Thoracic Oncology 448 716 1164 732 300 432 37.11%
Genetics & Genomics (GG): 1037 members
Medical Education (Med Ed) 1840 members
Terrorism & Inhalation Disasters (TID) 427 members
Members with NO Assembly Affiliation 2065 members
Last Reviewed: May 2019