Compendium of U.S. Health Systems, 2021
December 2024 New File Announcement: Group Practice Linkage File for 2021 has been added.
August 2024 New File Announcement: Nursing Home and Home Health Organization Linkage files for 2021 have been added.
The Compendium of U.S. Health Systems is composed of 635 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-H: Indicators of which data source identified the health system and health system identification numbers in the originating data source.
- Columns I-T: Total counts of system hospitals, physician groups, physicians, primary care physicians, physician assistants, nurse practitioners, nurses, nursing homes, and the extent to which systems own or manage hospitals in multiple States, total acute care beds, discharges, and residents.
- Columns U-AD: Variables identifying the extent to which systems include investor-owned hospitals, serve children, include teaching hospitals, serve a disproportionately high share of low-income and uninsured individuals, and offer insurance products.
If you would like to report a possible data discrepancy, please email CHSP@ahrq.hhs.gov.
2021 Compendium Files
- System 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, 98 KB)
- Compendium with searchable and sortable fields (XLS, 118 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.
- Nursing Home 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.
- Home Health Care Organization 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.
- Group Practice 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.
- Technical Documentation
- Technical Documentation Report (PDF, 2 MB)
- Compendium Hospital Linkage File, Technical Documentation (PDF, 463 KB)
- Compendium Nursing Home Linkage File, Technical Documentation (PDF, 667 KB)
- Compendium Home Health Care Linkage File, Technical Documentation (PDF, 702 KB)
- Compendium Group Practice Linkage File, Technical Documentation (PDF, 1.5 MB)
