Physician

David Yuan-Sou Chen, MD

According to 2025 Medicare claims, David Chen, MD (NPI: 1497018774) practices dermatology in the St. Louis, MO-IL market, with the plurality of this provider's patient population coming from St. Louis, MO. This provider's primary affiliated billing organization is WASHINGTON UNIVERSITY (NPI: 1992746903; TIN: 430653611) and primary practice location at 63108-2114.

Chen's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 87 traditional Medicare patients, billed 4,687 HCPCS/CPT codes, and received $260,118 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 156 prescription claims across 47 beneficiaries totaling $120,248 in drug costs, led by Imiquimod (Imiquimod). Open Payments data shows 1 records totaling $482. 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 $4,157 to $260,118. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $33,737 and ending at $120,248. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.