Report summary

University of California, Los Angeles Department of Surgery David Geffen in 2015-2026 reads as a 94-PI network with 334 internal PI collaborations. The research center of gravity is Medicine as the leading field (54% of slots across 81 PIs; 81 labels), Surgery as the leading subfield (21% of slots across 51 PIs; 51 labels), and Organ Transplantation Techniques and Outcomes as the leading topic (4% of slots across 12 PIs; 12 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 25 PIs across distinct clusters. The most prominent PIs by weighted works are Peyman Benharash (232.3 weighted works; Cardiac, Anesthesia and Surgical Outcomes, Cardiac Arrest and Resuscitation); Aydogan Özcan (219.1 weighted works; Digital Holography and Microscopy, Neural Networks and Reservoir Computing). The strongest pairings are Masha J. Livhits and Michael W. Yeh (71 shared works, weight 33.2). The strongest breakdown groups are group 1 with 10 PIs, 9 internal connections, weight 76, around Oncology, Surgery, Pulmonary and Respiratory Medicine, led by Peyman Benharash, Timothy R. Donahue, Guido Eibl; group 2 with 10 PIs, 13 internal connections, weight 129.2, around Surgery, Hepatology, Epidemiology, led by Sammy Saab, Vatche G. Agopian, Jerzy W. Kupiec‐Weglinski.