Report summary

University of California, Los Angeles Department of Medicine David Geffen in 2015-2026 reads as a 120-PI network with 457 internal PI collaborations. The dominant subject mix is Medicine as the leading field (53% of slots across 109 PIs; 109 labels), Epidemiology as the leading subfield (6% of slots across 20 PIs; 20 labels), and Liver Disease Diagnosis and Treatment as the leading topic (2% of slots across 7 PIs; 7 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 Gregg C. Fonarow (125.5 weighted works; Heart Failure Treatment and Management, Cardiovascular Function and Risk Factors). The most visible ties are Gregg C. Fonarow and Boback Ziaeian (42 shared works, weight 25.4); Anne M. Walling and Neil S. Wenger (50 shared works, weight 25.3). The leading breakdown groups are group 1 with 9 PIs, 9 internal connections, weight 74.5, around Cardiology and Cardiovascular Medicine, Radiology, Nuclear Medicine and Imaging, Surgery, led by Gregg C. Fonarow, Jeffrey L. Saver, Tzung K. Hsiai; group 2 with 9 PIs, 8 internal connections, weight 58.6, around Infectious Diseases, Emergency Medicine, Virology, led by Theodoros Kelesidis, Judith S. Currier, Holly R. Middlekauff.