Comparison of Performance of Psychiatrists vs Other Outpatient Physicians in the 2020 US Medicare Merit-Based Incentive Payment System

IMPORTANCE: Medicare’s Merit-Based Incentive Payment System (MIPS) is a new, mandatory, outpatient value-based payment program that ties reimbursement to performance on cost and quality measures for many US clinicians. However, it is currently unknown how the program measures the performance of psychiatrists, who often treat a different patient case mix with different clinical considerations than do other outpatient clinicians. OBJECTIVE: To compare performance scores and value-based reimbursement for psychiatrists vs other outpatient physicians in the 2020 MIPS. DESIGN, SETTING, AND PARTICIPANTS: In this cross-sectional study, the Centers for Medicare & Medicaid Services Provider Data Catalog was used to identify outpatient Medicare physicians listed in the National Downloadable File between January 1, 2018, and December 31, 2020, who participated in the 2020 MIPS and received a publicly reported final performance score. Data from the 593 863 clinicians participating in the 2020 MIPS were used to compare differences in the 2020 MIPS performance scores and value-based reimbursement (based on performance in 2018) for psychiatrists vs other physicians, adjusting for physician, patient, and practice area characteristics. EXPOSURES: Participation in MIPS. MAIN OUTCOMES AND MEASURES: Primary outcomes were final MIPS performance score and negative (penalty), positive, and exceptional performance bonus payment adjustments. Secondary outcomes were scores in the MIPS performance domains: quality, promoting interoperability, improvement activities, and cost. RESULTS: This study included 9356 psychiatrists (3407 [36.4%] female and 5 949 [63.6%] male) and 196 306 other outpatient physicians (69 221 [35.3%] female and 127 085 [64.7%] male) (data on age and race are not available). Compared with other physicians, psychiatrists were less likely to be affiliated with a safety-net hospital (2119 [22.6%] vs 64 997 [33.1%]) or a major teaching hospital (2148 [23.0%] vs 53 321 [27.2%]) and had lower annual Medicare patient volume (181 vs 437 patients) and mean patient risk scores (1.65 vs 1.78) (P < .001 for all). The mean final MIPS performance score for psychiatrists was 84.0 vs 89.7 for other physicians (absolute difference, −5.7; 95% CI, −6.2 to −5.2). A total of 573 psychiatrists (6.1%) received a penalty vs 5739 (2.9%) of other physicians (absolute difference, 3.2%; 95% CI, 2.8%-3.6%); 8664 psychiatrists (92.6%) vs 189 037 other physicians (96.3%) received a positive payment adjustment (absolute difference, −3.7%; 95% CI, −3.3% to −4.1%), and 7672 psychiatrists (82.0%) vs 174 040 other physicians (88.7%) received a bonus payment adjustment (absolute difference, −6.7%; 95% CI, −6.0% to −7.3%). These differences remained significant after adjustment. CONCLUSIONS AND RELEVANCE: In this cross-sectional study that compared US psychiatrists with other outpatient physicians, psychiatrists had significantly lower 2020 MIPS performance scores, were penalized more frequently, and received fewer bonuses. Policy makers should evaluate whether current MIPS performance measures appropriately assess the performance of psychiatrists.