Physician

Allison Betof Warner, MD

According to 2025 Medicare claims, Allison Warner, MD (NPI: 1174961908) practices medical oncology in the San Jose-Sunnyvale-Santa Clara, CA market, with the plurality of this provider's patient population coming from Santa Clara, CA. This provider's primary affiliated billing organization is STANFORD HEALTH CARE (NPI: 1437292927; TIN: 770465765) and primary practice location at 94305-2200.

Warner's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 91 traditional Medicare patients, billed 600 HCPCS/CPT codes, and received $49,174 in Medicare payments. The top billing code was 99205 (New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more). Part D data shows 112 prescription claims across 31 beneficiaries totaling $318,783 in drug costs, led by Mekinist (Trametinib Dimethyl Sulfoxide). Open Payments data shows 27 records totaling $19,588. 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 $6,644 to $49,174. Similarly, Part D prescription costs have moved sharply higher in recent years, from $10,842 to $318,783. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.