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 16,749 ATS members (as of May 12, 2023) 15,711 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) | 1259 | 2095 | 3354 | 2108 | 798 | 1246 | 37.15% |
| Behavioral Science & Health Services Research (BSHSR) | 402 | 772 | 1174 | 962 | 359 | 212 | 18.06% |
| Clinical Problems (CP) | 2436 | 2926 | 5362 | 3702 | 1584 | 1660 | 30.96% |
| Critical Care (CC) | 4042 | 3112 | 7154 | 5903 | 3474 | 1251 | 17.49% |
| Environmental, Occupational and Population Health (EOPH) | 512 | 927 | 1439 | 1028 | 366 | 411 | 28.56% |
| Nursing (NUR) | 129 | 75 | 204 | 181 | 115 | 23 | 11.27% |
| Pediatrics (PEDS) | 1352 | 531 | 1883 | 1473 | 1065 | 410 | 21.77% |
| Pulmonary Circulation (PC) | 947 | 1786 | 2733 | 2183 | 743 | 550 | 20.12% |
| Pulmonary Infections and Tuberculosis (PI-TB) | 1031 | 2239 | 3270 | 2056 | 576 | 1214 | 37.13% |
| Pulmonary Rehabilitation (PR) | 304 | 662 | 966 | 525 | 139 | 441 | 45.65% |
| Respiratory Cell and Molecular Biology (RCMB) | 1087 | 1718 | 2805 | 2008 | 807 | 797 | 28.41% |
| Respiratory Structure and Function (RSF) | 881 | 2171 | 3052 | 2076 | 524 | 976 | 31.98% |
| Sleep and Respiratory Neurobiology (SRN) | 670 | 1033 | 1703 | 1060 | 418 | 643 | 37.76% |
| Thoracic Oncology | 659 | 900 | 1559 | 1081 | 464 | 478 | 30.66% |
| Genetics & Genomics (GG): | 1056 members | ||||||
| Medical Education (Med Ed) | 2786 members | ||||||
| Terrorism & Inhalation Disasters (TID) | 466 members | ||||||
| Members with NO Assembly Affiliation | 1038 members | ||||||
