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Variation in spending associated with primary care practices.

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Area of Science:

  • Health economics
  • Healthcare management
  • Clinical practice variation

Background:

  • Patient attribution to primary care physician (PCP) practices is a key factor in healthcare delivery.
  • Significant variations in spending and pricing exist across different PCP practices.

Purpose of the Study:

  • To quantify the variation in healthcare spending and inpatient prices linked to patient attribution to specific PCP practices.
  • To analyze the impact of PCP practice spending levels on overall healthcare expenditures.

Main Methods:

  • Cross-sectional analysis of healthcare claims data.
  • Utilized random-effect models to estimate case-mix-adjusted spending across large PCP practices within 3-digit zip codes.
  • Compared inpatient prices between high-spending and low-spending PCP practices.

Main Results:

  • Significant spending differences were observed based on PCP attribution, even after adjusting for patient comorbidities and geography.
  • Patients in top-quartile spending PCP practices incurred approximately 30% higher costs than those in bottom-quartile practices.
  • Inpatient prices were 17% higher in top-quartile versus bottom-quartile practices, indicating price variation contributes significantly to overall spending differences.

Conclusions:

  • Meaningful opportunities exist to reduce healthcare spending through informed PCP selection and utilization of lower-cost providers.
  • Eliminating wasteful care and addressing persistent spending variations across PCP practices are crucial for cost containment.
  • Further research is needed to fully understand and address the drivers of spending variation, including unmeasured patient factors.