Highmark® Incorporated is a member of the Blue Cross and Blue Shield association, and is a non-profit insurance company with a research mission. Highmark is the largest private insurer in Pennsylvania, and one of the biggest private insurers in the nation in terms of the number of enrolled members. It has 3-4 million enrollees annually in Pennsylvania. In addition, since Highmark® insurance is mainly employment-based, members tend to be continuously enrolled for long periods. The health services reimbursement system in Highmark® is based on fee-for-service (rather than capitated payment), so the claims data are very detailed for research use.

The claims data provide access to variables that do not exist in other commonly used claims databases such as:

  • Provider’s zip code
  • National Provider Identifier
  • Provider’s Specialty code
  • Marital Status
  • Number of children
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