Physician
William Bruce Donnellan, M.D.
According to 2025 Medicare claims, William Donnellan, M.D. (NPI: 1396906657) practices hematology/oncology in the Chattanooga, TN-GA market, with the plurality of this provider's patient population coming from Hamilton, TN. This provider's primary affiliated billing organization is TENNESSEE ONCOLOGY PLLC (NPI: 1811955917; TIN: 621647259) and primary practice location at 37404-1130. Donnellan is affiliated with the Mission Health Partners, LLC (ACO ID: A2591) and Main Street Rural Health Cedar ACO LLC (ACO ID: A5502), participating under the MSSP model.
Donnellan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,009 traditional Medicare patients, billed 254,079 HCPCS/CPT codes, and received $5,138,724 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). Part D data shows 2,626 prescription claims across 422 beneficiaries totaling $8,239,745 in drug costs, led by Revlimid (Lenalidomide). DME data shows 152 claims. Open Payments data shows 22 records totaling $2,360. 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 moved sharply higher in recent years, from $597,886 to $5,138,724. Similarly, Part D prescription costs have risen steadily, from $174,907 to $8,239,745. In contrast, DME billing represents a smaller volume and moved up and down with repeated peaks and valleys, starting at $1,035 and ending at $2,952.