Physician

Brett Howard Herzog, MD PHD

According to 2025 Medicare claims, Brett Herzog, MD PHD (NPI: 1023499282) practices medical oncology in the St. Louis, MO-IL market, with the plurality of this provider's patient population coming from St. Clair, IL. This provider's primary affiliated billing organization is WASHINGTON UNIVERSITY PHYSICIANS IN ILLINOIS, INC (NPI: 1477076263; TIN: 822026363) and primary practice location at 62269-2998. Herzog is affiliated with the IRCCO (ACO ID: A2619) and SBL accountable care organization (ACO ID: A5147), participating under the MSSP model.

Herzog's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 204 traditional Medicare patients, billed 40,761 HCPCS/CPT codes, and received $1,225,122 in Medicare payments. The top billing code was 99215 (Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more). Part D data shows 1,102 prescription claims across 139 beneficiaries totaling $478,298 in drug costs, led by Tagrisso (Osimertinib Mesylate). DME data shows 16 claims. Open Payments data shows 7 records totaling $57,422. 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 $2,964 to $1,225,122. Similarly, Part D prescription costs have risen steadily, from $2,853 to $478,298. In contrast, DME billing represents a smaller volume and moved sharply higher in recent years, from $1,158 to $2,713.