James O'Malley

James O'Malley is a Professor at The Dartmouth Institute for Health Policy and Clinical Practice and Professor of Biomedical Data Science at the Geisel School of Medicine, Dartmouth College. He holds the prestigious Peggy Y. Thomson Professorship in the Evaluative Clinical Sciences and serves as an Adjunct Professor of Computer Science, demonstrating his interdisciplinary expertise spanning statistics, healthcare policy, and computer science.

Dr. O'Malley earned his B.Sc. (Hons) in Statistics from the University of Canterbury, New Zealand (1994), M.S. in Applied Statistics from Purdue University (1999), and Ph.D. in Statistics from the University of Canterbury (1999), followed by a Postdoctoral Fellowship in Biostatistics at Harvard Medical School (2001).

His research spans statistical methodology and healthcare applications, with methodological contributions in statistical inference for social networks, multivariate hierarchical models, comparative effectiveness research, and Bayesian analysis. These methods address critical healthcare problems including health-social network relationships, healthcare quality measurement, medical technology diffusion, and comparative effectiveness in vascular surgery, cardiology, and mental health. His work bridges theoretical statistics with practical healthcare challenges through collaborations with physicians, epidemiologists, and health services researchers.

Dr. O'Malley's recent publications reveal a strong emphasis on healthcare network analysis, comparative effectiveness research, and methodological innovations. His work examines physician networks and patient outcomes, evaluates surgical interventions, identifies healthcare disparities, and develops novel statistical approaches for complex healthcare data, with significant contributions appearing in high-impact journals across multiple disciplines.

• Mid-career Excellence award from the Health Policy Section of the ASA
• Elected fellow of the ASA (2012)
• ISPOR Award for Excellence in Methodology (2019)
• Peggy Y. Thomson Professorship (2021)
• 2025 Research Excellence Award for Senior Faculty in the Foundational Sciences

As a dedicated mentor, Dr. O'Malley has supervised numerous post-doctoral fellows and PhD students across multiple programs. He currently leads major research initiatives including NIH/NLM R01LM014233 on Geographic Variations in Health Care, serves as PI for cores in NIH/NIA projects on healthcare inequity in Alzheimer's Disease and Rural Health Care Delivery Science, and contributes to multiple substantial grants totaling millions of dollars. He previously chaired the Health Policy Statistics Section of the ASA and co-chaired the 2011 International Conference on Health Policy Statistics.

Dr. O'Malley co-organized the Dartmouth Interdisciplinary Network Research (DINR) seminar series (2014-2020) and serves as an Associate Editor for Statistics in Medicine and Observational Studies, demonstrating his commitment to advancing methodological research and fostering interdisciplinary collaboration in health services research.