Physician

Ashley Jillian Williamson, M.D.

According to 2025 Medicare claims, Ashley Williamson, M.D. (NPI: 1548640386) practices vascular surgery in the Chicago-Naperville-Schaumburg, IL market, with the plurality of this provider's patient population coming from Cook, IL. This provider's primary affiliated billing organization is UNIVERSITY OF CHICAGO (NPI: 1821048786; TIN: 36-2177139) and primary practice location at 60637-1447. Williamson is affiliated with the UCMCNACO, LLC (ACO ID: A3531), participating under the MSSP model.

Williamson's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 120 traditional Medicare patients, billed 160 HCPCS/CPT codes, and received $11,847 in Medicare payments. The top billing code was 93880 (Ultrasound of both sides of head and neck blood flow). 2022 Part D data shows 13 prescription claims totaling $727 in drug costs. Open Payments data shows 21 records totaling $7,296. 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 has fewer than 5 years of reported Medicare Part B carrier billing data, so a reliable trend cannot be assigned. Concurrently, Part D prescription costs started with an early spike, then settled into a lower baseline, moving from $1,104 to $727. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.