Plastic Surgeons and Equity: Are Merit-Based Incentive Payment System Scores Impacted by Minority Patient Caseload?

The Centers for Medicare and Medicaid Services introduced the Merit-based Incentive Payment System (MIPS) in 2017 to extend value-based payment to outpatient physicians. The authors hypothesized that the MIPS scores for plastic surgeons are impacted by the existing measures of patient disadvantage, minority patient caseload, and dual eligibility.

The authors conducted a retrospective cohort study of plastic surgeons participating in Medicare and MIPS using the Physician Compare national downloadable file and MIPS scores. Minority patient caseload was defined as nonwhite patient caseload. The authors evaluated the characteristics of participating plastic surgeons, their patient caseloads, and their scores.

Of 4539 plastic surgeons participating in Medicare, 1257 participated in MIPS in the first year of scoring. The average patient caseload is 85% white, with racial/ethnicity data available for 73% of participating surgeons. In multivariable regression, higher minority patient caseload is associated with a lower MIPS score.

As minority patient caseload increases, MIPS scores decrease for otherwise similar caseloads. The Centers for Medicare and Medicaid Services must consider existing and additional measures of patient disadvantage to ensure equitable surgeon scoring.