Report summary

University of Southern California Department of Preventive Medicine Keck in 2015-2026 reads as a 108-PI network with 694 internal PI collaborations. The dominant subject mix is Medicine as the leading field (36% of slots across 74 PIs; 74 labels), Health, Toxicology and Mutagenesis as the leading subfield (7% of slots across 21 PIs; 21 labels), and Air Quality and Health Impacts as the leading topic (6% of slots across 19 PIs; 19 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 25 PIs across distinct clusters. The leading PI names are Adam M. Leventhal (94.8 weighted works; Smoking Behavior and Cessation, Behavioral Health and Interventions). The most visible ties are Adam M. Leventhal and Jessica L. Barrington‐Trimis (109 shared works, weight 54.1); Carrie V. Breton and Theresa M. Bastain (134 shared works, weight 46.3). The leading breakdown groups are group 1 with 10 PIs, 9 internal connections, weight 238.5, around Physiology, Clinical Psychology, Public Health, Environmental and Occupational Health, led by Adam M. Leventhal, Tyler B. Mason, Jennifer B. Unger.