Dr. Este Geraghty is a physician, geospatial health leader, and former Chief Medical Officer at Esri, where she led strategy and thought leadership for the global Health and Human Services sector. Over more than a decade at Esri, she helped organizations worldwide harness geographic information systems (GIS) and location intelligence to address complex challenges such as pandemic response, healthcare access, homelessness, climate-related health risks, and the opioid crisis. Her work has supported governments, health systems, and nonprofits in turning data into actionable insights that improve health outcomes and strengthen community resilience.

Earlier in her career, Dr. Geraghty served as Deputy Director of the Center for Health Statistics and Informatics at the California Department of Public Health, where she led statewide programs in public health informatics, vital records, and open data. She was also an Associate Professor of Clinical Internal Medicine at the University of California, Davis, where her research focused on applying geographic approaches to health policy, environmental health, and community development.

Dr. Geraghty holds degrees in medicine, medical informatics, and public health from UC Davis, and is a certified Geographic Information Systems Professional (GISP). She is the author of the book GIS for Pandemics: Lessons Learned from COVID-19 and has published dozens of peer-reviewed papers, book chapters, and other scholarly works spanning topics from infectious disease to global health policy.

Her work has been widely recognized. She was featured in the Emmy Award-winning documentary Geospatial Revolution: Mapping the Pandemic and has been named one of the Most Influential Women in Health IT by HIMSS and one of the Top 50 Women Leaders in Medicine by Women We Admire.

Now retired from Esri, Dr. Geraghty continues to write, advise, and speak internationally about the future of health, data, and geography. A lifelong advocate for the power of place in understanding health, she also lives her philosophy personally—traveling the world as a nomadic explorer, having visited more than 80 countries across all seven continents.