The article by Qi and colleagues 1 in this issue of JAMA Health Forum reports on psychiatrists' performance compared with nonpsychiatrist outpatient physicians on the Merit-Based Incentive Payment System (MIPS), Medicare's mandatory value-based payment (VBP) program. The authors examined 2020 MIPS final performance scores, reflecting 4 performance domains (quality, interoperability, improvement activities, and cost), and score-determined payment adjustments.Overall, psychiatrists received lower scores, were less likely to receive bonuses, and were more likely to receive penalties than other physicians. The psychiatrists' 20 most frequently reported performance measures were identical to those reported by nonpsychiatrists; although psychiatrists frequently reported nonbehavioral health measures, their uptake of behavioral health measures was low.The study makes a compelling case that, as currently implemented, MIPS has the potential to further reduce access to behavioral health care for Medicare beneficiaries because of psychiatrists' disproportionate receipt of penalties. Using 2018 data, the study evaluated the 2020 program when payment adjustments were up to 5% of clinicians' total Medicare Part B reimbursement. However, as adjustments increase, reaching 9% in 2022, psychiatrists' decision to participate in Medicare may be substantially affected.