The HCSRN, formerly known as the HMO Research Network, brings together the research centers from many of the nation's best and most innovative health care systems. Collectively, the HCSRN represents more than 2,000 scientists and research staff with methodological and content expertise from an array of disciplines such as epidemiology, economics, disparities, outcomes and quality assessment, trials, and genomics.

To listen to a 2019 webinar about the HCSRN's capabilities, click here (password: HCSRNwebinar2019).


To improve individual and population health through research that connects the resources and capabilities of learning health care systems.


The Health Care Systems Research Network is the nation’s preeminent source of population-based research that measurably improves health and health care.


  • Scientific excellence
  • Innovation and creativity
  • Actionable research findings
  • Collaboration and teamwork
  • Transparency
  • Efficiency


Sarah Greene, MPH is the Executive Director of the Health Care Systems Research Network. As the Network’s inaugural executive leader, she oversees strategy, communication, finances, and operations. Ms. Greene worked with the HCSRN from 2000-2011 on numerous initiatives including the facilitated IRB process, research tools and resources, strategic planning, and conference programming.

Ms. Greene’s previous position was with PCORI as Associate Director of the Methods and Infrastructure Program. She provided intellectual and organizational leadership for PCORnet, the National Patient-Centered Clinical Research Network. Before joining PCORI, she spent 15 years with Group Health (now Kaiser Permanente Washington) in various roles, including the research faculty, and in the delivery system as director of strategy and business development. She has served leadership roles in several research consortia, including NCI’s Cancer Research Network, and the Clinical and Translational Science Awards program, for which she chaired the national Community Partners Integration committee.  Ms. Greene’s research has included patient-centered communication, health literacy, cancer care, approaches to improving research oversight, and optimizing collaboration.

An accomplished writer and speaker, Ms. Greene has shared her work with numerous organizations, including the National Academy of Medicine, International Society of Pharmacoeconomics Research, and American College of Cardiology. She has authored more than 70 manuscripts, many on development and implementation of multicenter research. She received both her MPH and a BA in Psychology and Italian from Indiana University, and resides in Seattle.


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