What's New
Updates From the CHSP Initiative
2024
AHRQ has released new versions of the Compendium of U.S. Health systems, updating data files for 2022, 2021, and 2020. The Compendium provides data on the characteristics and organization of all 640 health systems in the United States as of 2022. Additions to the Compendium include:
- Medicare Advantage contract numbers (2022, 2021, and 2020 files),
- Nurse Practitioner and Physician Assistant counts (now in 2022, 2021, and 2020 files),
- Ownership types for systems and hospitals (2021 and 2020 files), and
- Revenue data for system and hospitals (2021 and 2020 files).
These updates provide even greater insights into the structure and operations of healthcare systems, enabling researchers to better understand how these organizations affect care delivery in the United States. The Compendium data files and documentation are available at https://www.ahrq.gov/chsp/data-resources/compendium.html.
2023
The NBER Center of Excellence, a CHSP grantee, published "Organization and Performance of U.S. Health Systems" in JAMA January 24. The study identified and described health systems in the United States, assessed differences between physicians and hospitals in and outside of health systems, and compared quality and cost of care delivered by physicians and hospitals in and outside of health systems.
2022
The Dartmouth Center of Excellence, a CHSP grantee, released its public version database of the National Survey of Healthcare Organizations and Systems (NSHOS) 2017-2018, which assessed organizational characteristics and care delivery capabilities of healthcare systems, primary and multispecialty care physician practices, and hospitals.
2021
AHRQ Comparative Health System Performance Initiative: Program Overview and Accomplishments, 2015–2020 (PDF, 826 KB)
2020
Scanlon D, Furukawa M (eds.) Special Issue: Comparative Health System Performance. Health Serv Res 2020 Dec 7. https://onlinelibrary.wiley.com/toc/14756773/2020/55/S3. Accessed March 18, 2021.
Ridgely MS, Timbie JW, Wolf LJ, Duffy EL, Buttorff C, Tom A, Vaiana ME. Consolidation by Any Other Name: The Emergence of Clinically Integrated Networks. Santa Monica, CA: RAND Corporation; 2020. Accessed August 5, 2020.
Beaulieu ND, Dafny LS, Landon BE, Dalton JB, Kuye I, McWilliams JM. Changes in Quality of Care After Hospital Mergers and Acquisitions. N Engl J Med 2020 Jan 2;382(1):51-59.
2019
O'Hanlon CE, Kranz AM, DeYoreo M, Mahmud A, Damberg CL, Timbie J. Access, Quality, and Financial Performance of Rural Hospitals Following Health System Affiliation. Health Aff 2019 Dec;38(12).
Furukawa MF, Machta RM, Barrett KA, Jones DJ, Shortell SM, Scanlon DP, Lewis VA, O’Malley AJ, Meara ER, Rich EC. Landscape of Health Systems in the United States. Med Care Res Rev 2019 Jan 23:1077558718823130. [Epub ahead of print]
