Published on APM Connect | August 2026 CMS has not yet posted the final list of clinicians who will be in the Ambulatory Specialty Model on January 1, 2027, 133 days from now, the ASM Participants data site still holds only the February preliminary file. But the two cost measures the model runs on are not a mystery, and they are not new. ASM's cost category uses the existing MIPS episode-based cost measures for heart failure and low back pain, and the 2026 performance-period

→ Look up your NPI at TechyPolicy.com — the interactive tool shows your individual Part B allowed amounts, penalty exposure at each year’s rate (9% → 12%), cohort assignment, small practice designation, and organizational context. If you manage a group, the organization scorecard aggregates all ASM participants within your entity.

CMS determines ASM participant eligibility using the following criteria. A clinician must meet all four to be subject to mandatory participation in a given performance ye

CMS has finalized the Ambulatory Specialty Model (ASM)—a mandatory, condition‑focused value‑based care initiative designed to transform specialist care for Original Medicare beneficiaries. Launching on January 1, 2027, and running through December 31, 2031, ASM targets outpatient specialists treating heart failure and low back pain.