Physician

Arjun Natarajan, MD

According to 2025 Medicare claims, Arjun Natarajan, MD (NPI: 1144682642) practices medical oncology in the Elgin, IL market, with the plurality of this provider's patient population coming from Kane, IL. This provider's primary affiliated billing organization is ADVOCATE HEALTH AND HOSPITALS CORPORATION (NPI: 1003542184; TIN: 362169147) and primary practice location at 60506-1404. Natarajan is affiliated with the Advocate Physician Partners Accountable Care, Inc. (ACO ID: A1033) and Accountable Care Organization of Advocate Aurora Health, LLC (ACO ID: D0260), participating under both the MSSP and REACH models.

Natarajan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 61 traditional Medicare patients, billed 184 HCPCS/CPT codes, and received $8,450 in Medicare payments. The top billing code was 99204 (New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more). Part D data shows 73 prescription claims across 22 beneficiaries totaling $73,868 in drug costs. Open Payments data shows 8 records totaling $221. 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 started with an early spike, then settled into a lower baseline, moving from $21,024 to $8,450. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $3,407 and ending at $73,868. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.