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 15,381 ATS members (as of October 23, 2023) 15,058 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) | 1155 | 2042 | 3197 | 1934 | 718 | 1263 | 39.51% |
| Behavioral Science & Health Services Research (BSHSR) | 335 | 696 | 1031 | 824 | 292 | 207 | 20.08% |
| Clinical Problems (CP) | 2339 | 2794 | 5133 | 3464 | 1490 | 1669 | 32.52% |
| Critical Care (CC) | 3961 | 2929 | 6890 | 5617 | 3366 | 1273 | 18.48% |
| Environmental, Occupational and Population Health (EOPH) | 490 | 837 | 1327 | 921 | 344 | 406 | 30.60% |
| Nursing (NUR) | 118 | 64 | 182 | 158 | 104 | 24 | 13.19% |
| Pediatrics (PEDS) | 1276 | 485 | 1761 | 1349 | 992 | 412 | 23.40% |
| Pulmonary Circulation (PC) | 907 | 1703 | 2610 | 2064 | 712 | 546 | 20.92% |
| Pulmonary Infections and Tuberculosis (PI-TB) | 988 | 2200 | 3188 | 1920 | 509 | 1268 | 39.77% |
| Pulmonary Rehabilitation (PR) | 279 | 609 | 888 | 445 | 118 | 443 | 49.89% |
| Respiratory Cell and Molecular Biology (RCMB) | 1009 | 1590 | 2599 | 1774 | 708 | 825 | 31.74% |
| Respiratory Structure and Function (RSF) | 857 | 2047 | 2904 | 1908 | 484 | 996 | 34.30% |
| Sleep and Respiratory Neurobiology (SRN) | 670 | 1064 | 1734 | 1064 | 408 | 670 | 38.64% |
| Thoracic Oncology | 674 | 903 | 1577 | 1105 | 476 | 472 | 29.93% |
| Genetics & Genomics (GG): | 1356 members | ||||||
| Medical Education (Med Ed) | 3674 members | ||||||
| Terrorism & Inhalation Disasters (TID) | 567 members | ||||||
| Members with NO Assembly Affiliation | 323 members | ||||||
