Physician

Allison Chelsa Billi, M.D./PH.D.

According to 2025 Medicare claims, Allison Billi, M.D./PH.D. (NPI: 1639559453) practices dermatology in the Ann Arbor, MI market, with the plurality of this provider's patient population coming from Washtenaw, MI. This provider's primary affiliated billing organization is REGENTS OF THE UNIVERSITY OF MICHIGAN (NPI: 1528097128; TIN: 386006309) and primary practice location at 48109-5000. Billi is affiliated with the POM ACO (ACO ID: A1297), participating under the MSSP model.

Billi's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 118 traditional Medicare patients, billed 426 HCPCS/CPT codes, and received $12,270 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). 2020 Part D data shows 16 prescription claims totaling $2,099 in drug costs. No Open Payments records. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing did not follow a clear longitudinal pattern. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $3,000 to $2,099. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.