Increased Medicare expenditures for physicians' services: what are the causes?

Area of Science:

• Health Economics
• Geriatric Medicine
• Healthcare Policy

Background:

• Rising expenditures for physician services pose financial challenges.
• Scheduled decreases in Medicare payments for physician services necessitate understanding utilization trends.
• Medicare beneficiaries represent a significant and growing patient population.

Purpose of the Study:

• To identify the sources of change in the volume and intensity of physician services utilized by Medicare beneficiaries.
• To quantify the contributions of beneficiary characteristics versus general utilization increases.
• To inform policy decisions regarding Medicare physician payments and service delivery.

Main Methods:

• Analysis of Medicare claims data from 1993 to 1998.
• Statistical modeling to assess changes in service volume and intensity.
• Decomposition of utilization changes based on beneficiary demographics, health status, and care management enrollment.

Main Results:

• Per capita volume and intensity of physician services increased by over 30% between 1993 and 1998.
• Beneficiary demographic shifts, health conditions, and managed care enrollment accounted for at most half of this increase.
• The remaining half of the increase was attributed to a general rise in the utilization of physician services across all beneficiary categories.

Conclusions:

• Medicare physician service utilization significantly increased during the study period.
• Both patient-specific factors and a general trend towards increased care contributed to this rise.
• Understanding these drivers is crucial for managing healthcare costs and ensuring appropriate care delivery within the Medicare program.