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 15,892 ATS members (as of January 14, 2022) 14,976 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) | 1296 | 1979 | 3275 | 1801 | 703 | 1474 | 45.01% |
| Behavioral Science & Health Services Research (BSHSR) | 296 | 661 | 957 | 774 | 263 | 183 | 19.12 |
| Clinical Problems (CP) | 2444 | 2797 | 5241 | 3323 | 1492 | 1918 | 36.60% |
| Critical Care (CC) | 3882 | 3012 | 6894 | 5464 | 3247 | 1430 | 20.74% |
| Environmental, Occupational and Population Health (EOPH) | 470 | 807 | 1277 | 862 | 330 | 415 | 32.50% |
| Nursing (NUR) | 127 | 66 | 193 | 169 | 114 | 24 | 12.44% |
| Pediatrics (PEDS) | 1266 | 466 | 1732 | 1291 | 950 | 441 | 25.46% |
| Pulmonary Circulation (PC) | 857 | 1682 | 2539 | 1870 | 601 | 669 | 26.35% |
| Pulmonary Infections and Tuberculosis (PI-TB) | 1012 | 2178 | 3190 | 1781 | 492 | 1409 | 44.17% |
| Pulmonary Rehabilitation (PR) | 264 | 648 | 912 | 421 | 104 | 491 | 53.84% |
| Respiratory Cell and Molecular Biology (RCMB) | 947 | 1553 | 2500 | 1650 | 633 | 850 | 34.00% |
| Respiratory Structure and Function (RSF) | 827 | 1947 | 2774 | 1775 | 483 | 999 | 36.01% |
| Sleep and Respiratory Neurobiology (SRN) | 666 | 1084 | 1750 | 1053 | 395 | 697 | 39.83% |
| Thoracic Oncology | 622 | 883 | 1505 | 975 | 408 | 530 | 35.22% |
| Genetics & Genomics (GG): | 1294 members | ||||||
| Medical Education (Med Ed) | 3077 members | ||||||
| Terrorism & Inhalation Disasters (TID) | 529 members | ||||||
| Members with NO Assembly Affiliation | 916 members | ||||||
