Physician
William L. Peterson, M.D.
According to 2025 Medicare claims, William Peterson, M.D. (NPI: 1174623854) practices gastroenterology in the Springfield, IL market, with the plurality of this provider's patient population coming from Sangamon, IL. This provider's primary affiliated billing organization is SPRINGFIELD CLINIC, LLP (NPI: 1780638478; TIN: 370701328) and primary practice location at 62703-2403. Peterson is affiliated with the Springfield Clinic ACO, LLC (ACO ID: A2587), IRCCO (ACO ID: A2619), and SBL accountable care organization (ACO ID: A5147), participating under the MSSP model.
Peterson's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 644 traditional Medicare patients, billed 8,479 HCPCS/CPT codes, and received $252,422 in Medicare payments. The top billing code was 45385 (Removal of polyps or growths of large bowel using an endoscope with mechanical snare). Part D data shows 4,457 prescription claims across 874 beneficiaries totaling $2,198,544 in drug costs, led by Stelara (Ustekinumab). Open Payments data shows 49 records totaling $1,439. 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 has risen steadily, from $159,591 to $252,422. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $630,411 to $2,198,544. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.