We conduct studies of the organization and delivery of health services in order to improve the effectiveness of care and, ultimately, accountability for population health. We emphasize innovations in health care delivery and assessment of organizational performance to improve the technical quality of care delivered, patient experience and outcomes of care, population health, and cost. We work to maximize our “voice” and impact through publications, presentations at conferences, roundtables, meetings, webinars, media contacts, and discussions with private and public sector action/thought leaders.


Through practice-based research and dissemination of evidence, we aspire to help make the U.S. healthcare system among the most responsive in the world, characterized by high quality, efficient, and patient-centered care.

Latest Updates

News, findings, & announcements
Summer 2017 Message From the Directors

As our nation’s healthcare system continues its journey of transformation, CHOIR research is making important contributions on many fronts. For example, our work on patient engagement in ACOs has documented the importance of primary care practices having a patient-centered culture and motivating more activated patients for achieving better patient-reported physical and social outcomes and patients […]

Free Article Access: Evaluating the Impact of an Accountable Care Organization on Population Health

For a limited time, access is free to the newly published article “Evaluating the Impact of an Accountable Care Organization on Population Health: The Quasi-Experimental Design of the German Gesundes Kinzigtal” in Population Health Management. This study, led by the 2015-2016 CHOIR Harkness Fellow Dr. Alexander Pimperl, presents an evaluation study design for assessing the […]

CHOIR at AcademyHealth 2017

CHOIR is looking forward to connecting with colleagues at the 2017 AcademyHealth Annual Research Meeting in New Orleans June 25th – 27th. We are pleased to announce the following scheduled presentations by CHOIR team members:   Podium Presentations Sunday, June 25th 2:00-3:00pm Session: Work Climate Influences on Organizational Performance “Organizational Influences on Time Pressure, Chaos […]

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How does patient engagement relate to patient-reported outcomes? New publication explores this question

The ACTIVATE study, now in its third year, has been collecting data from primary care practices, care team members, and patients at two large accountable care organizations to explore the impact of patient activation and engagement in their care. A recent publication, now online in the Journal of General Internal Medicine, examines the relationship between […]

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Accountable Communities for Health Data-Sharing Toolkit

CHOIR’s California Accountable Communities for Health (ACH) Project, led by Dr. Diane Rittenhouse, has now made available its ACH Data-Sharing Toolkit, available for free download. This toolkit, sponsored by the California Health and Human Services Agency, provides a resource to assist communities in California and beyond in working to share data across sectors for health […]

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Related Pages

National Study of Physician Organizations

More information about the National Study of Physician Organizations, with links to early-wave instruments and data archives

Shortell Research Projects

An archive of projects and survey instruments on intensive care, quality improvement, and health system integration

Center for Lean Engagement and Research in Healthcare

Affiliated Berkeley SPH center conducting research on Lean Methodology in healthcare settings