Each year, the DAC creates a zip to HSA/HRR crosswalk using shape files downloaded annually and linked to CMS data. This crosswalk is the foundation for the Hospital Service Area (HSA) and Hospital Referral Region (HRR) health care markets that are used in the Dartmouth Atlas project to measure geographic variation in utilization and costs.
Each year the DAC creates a zip to Median Household Income Crosswalk file using Census and zip code data. These data are most often used for income adjustment.
American Hospital Association (AHA)
More than 6,300 hospitals and 400 health care systems provide survey responses to the American Hospital Association annually. The data covers an array of data points, including demographics, operations, service line, staffing, c-suite information, expenses, physician organization structures, beds, utilization and more.
The DAC purchases AHA data annually with a license specific to measuring hospital statistics for the Dartmouth Atlas project geographic health care markets, including HSAs and HRRs and certain academic research projects. Use of the data is limited by the scope of work and the number of covered users. All use of AHA data in the DAC must be reviewed and approved by the DAC Director prior to use.
Provider of Services (POS) file
The Provider of Services (POS) file contains hospital and healthcare facility characteristic data for Medicare contracted facilities. The DAC downloads this public file annually for use on the Dartmouth Atlas Project.
Prescription Drug Data
First Data Bank (FDB)
The DAC purchases the FDB MedKnowledge drug database annually to supplement the CMS prescription drug data. This database is proprietary. Therefore, you may not download and share this information outside of your specific DAC approved project.
- First Data Bank Documentation
- Enhanced Therapeutic Classification Table
- How to Connect to the First Data Bank Drug Database on the DAC Servers
- Working with Drug Data
There are several research teams using Doximity Data in coordination with CMS data. Doximity contains more granular information about physicians and other medical professionals than what is currently available in the CMS data. These data are only available to researchers with a license. New requests for use require purchasing an additional license and new scope of work contract.