Compendium of U.S. Health Systems, 2016

The Compendium of U.S. Health Systems is composed of 626 U.S. health systems, defined in this analysis to include at least one hospital and at least one group of physicians providing comprehensive care, and who are connected with each other and with the hospital through common ownership or joint management.

The Compendium database includes:

• Columns A-D: System identification number (a unique number assigned by AHRQ), name, home office city, and State.
• Columns E-I: Indicators of which data source identified the health system and health system identification numbers in the originating data source.
• Columns J-R: Total counts of system hospitals, physician groups, physicians, primary care physicians, extent to which systems own or manage hospitals in multiple States, total acute care beds, discharges, and residents.
• Columns S-AA: Variables identifying the extent to which systems include investor-owned hospitals, serve children, include teaching hospitals, and serve a disproportionately high share of low-income and uninsured individuals.
• Columns AB-AF (New!): Variables describing system participation in alternative payment models (Accountable Care Organizations and Medicare bundled payment programs) and information on whether systems offer insurance products.

If you would like to report a possible data discrepancy, please email CHSP@ahrq.hhs.gov.

2016 Compendium Files

• All Compendium Files (ZIP, 9 MB)
• Excel File—Your computer should automatically prompt you to open the file in a spreadsheet application to view the data.
  • Compendium of U.S. Health Systems (CSV, 84 KB)
  • Compendium with searchable and sortable fields (XLS, 96 KB)
• Hospital Linkage File—We recommend that Excel users download only the Excel version of the file. If Excel is used to open the CSV file, the program will automatically drop the zeros in fields with leading zeros.
  • Excel (1.7 MB)
  • CSV file (820 KB)
• Group Practice Linkage File—A new data file added to AHRQ's Compendium of U.S. Health Systems identifies 36,303 physician group practices and shows which are part of health systems. Two versions are available. We recommend that Excel users download only the Excel version. If Excel is used to open the CSV file, the program will automatically drop the zeros in fields with leading zeros.
  • Excel (2.7 MB)
  • CSV file (3.9 MB)
• Technical Documentation
  • Technical Documentation Report (PDF, 2 MB)
    • Appendix A. QuintilesIMS/SK&A and AHA Methodologies (PDF, 538 KB)
    • Appendix B. Automated Matches (PDF, 1.8 MB)
    • Appendix C. Health Systems With Nested Subsystems (Prior to Exclusions) (PDF, 512 KB)
    • Appendix D. Alternative Payment Models Data and Methods (PDF, 412 KB)
    • Appendix E. Insurance Product Data and Methods (PDF, 807 KB)
    • Appendix F. Data Dictionary (PDF, 329 KB)
  • Compendium Hospital Linkage File, Technical Documentation (PDF, 350 KB)
    • Appendix A. Non-Federal General Acute Care Flag (PDF, 241 KB)
    • Appendix B. Data Dictionary – Hospital Linkage File (PDF, 191 KB)
  • Group Practice Linkage File, Technical Documentation (updated December 2020) (PDF, 941 KB)