Physician

Robert Ryn Johnson, M.D.

According to 2025 Medicare claims, Robert Johnson, M.D. (NPI: 1598942781) practices radiation oncology in the San Luis Obispo-Paso Robles, CA market, with the plurality of this provider's patient population coming from San Luis Obispo, CA. This provider's primary affiliated billing organization is SUTTER BAY MEDICAL FOUNDATION (NPI: 1013950807; TIN: 941156581) and primary practice location at 93405-8804. Johnson is affiliated with the Sutter Medicare Direct (ACO ID: A5279), participating under the MSSP model.

Johnson's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 370 traditional Medicare patients, billed 5,648 HCPCS/CPT codes, and received $1,170,784 in Medicare payments. The top billing code was G6015 (Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session). Part D data shows 74 prescription claims across 33 beneficiaries totaling $3,899 in drug costs. 2017 DME data shows 11 claims. No Open Payments records. 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 $186,763 to $1,170,784. In contrast, Part D prescription costs have fallen sharply in recent years, from $10,359 to $3,899. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.