Prices don't drive regional Medicare spending variations

Area of Science:

• Health Economics
• Healthcare Policy
• Medicare Research

Background:

• Per capita Medicare spending exhibits substantial regional disparities, with areas like New York City and Miami spending over twice as much as Salem, Oregon.
• Existing research suggests a need to understand the drivers behind these significant regional variations in healthcare expenditure.

Purpose of the Study:

• To investigate the extent to which local price differences account for regional variations in Medicare spending.
• To identify the primary factors contributing to disparities in Medicare payments across different geographic regions.

Main Methods:

• Analysis of Medicare spending data across 306 Hospital Referral Regions.
• Price adjustment of Medicare spending to account for local cost-of-living and goods/services prices.
• Comparative analysis of spending before and after price adjustments.

Main Results:

• Price adjustments reduced, but did not substantially alter, the observed regional variations in Medicare spending.
• The findings indicate that local price differences play a minor role in explaining Medicare payment disparities.
• Healthcare utilization patterns emerged as a more significant determinant of regional Medicare spending variations.

Conclusions:

• Regional variations in Medicare payments are primarily driven by differences in healthcare utilization, not by local price levels.
• Special Medicare payments for medical education and uncompensated care for low-income populations also contribute to regional payment disparities.
• Policy interventions aimed at reducing Medicare spending variations should focus on utilization management and addressing the costs associated with medical education and care for vulnerable populations.