biostudies-literatureUnknown60(5)Manouchehri Amoli M<h4>Objectives</h4>To assess whether physicians participating in the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) exhibit different billing behaviors and practice patterns compared to non-participating physicians after MACRA implementation.<h4>Study setting and design</h4>A quasi-experimental staggered difference-in-difference design was used to compare pre-and post-MACRA changes among participants and non-participants from 2013 to 2021. Primary outcomes included annual submitted charges, annual Medicare payments, and charge-to-payment ratios. Secondary outcomes were average charges and payments per beneficiary, total services, and the number of beneficiaries served.<h4>Data sources and analytic sample</h4>The study analyzed secondary data from Centers for Medicare & MedicaHealth services researche14631https://www.ebi.ac.uk/biostudies/studies/S-EPMC12461111biostudies-literatureNavigating New Waters: How Did MACRA 2015 Transform Practices Among Medicare Part B Physicians?PMC12461111Dahman BManouchehri Amoli MfalseNavigating New Waters: How Did MACRA 2015 Transform Practices Among Medicare Part B Physicians?<h4>Objectives</h4>To assess whether physicians participating in the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) exhibit different billing behaviors and practice patterns compared to non-participating physicians after MACRA implementation.<h4>Study setting and design</h4>A quasi-experimental staggered difference-in-difference design was used to compare pre-and post-MACRA changes among participants and non-participants from 2013 to 2021. Primary outcomes included annual submitted charges, annual Medicare payments, and charge-to-payment ratios. Secondary outcomes were average charges and payments per beneficiary, total services, and the number of beneficiaries served.<h4>Data sources and analytic sample</h4>The study analyzed secondary data from Centers for Medicare & Medica2025-01-01T00:00:00Z2025 Oct2026-06-03T19:34:24.159Z2026-04-30T03:12:22.943ZS-EPMC124611114031280110.1111/1475-6773.14631