Physician

David Arthur Merrill, MD

According to 2025 Medicare claims, David Merrill, MD (NPI: 1902923410) practices general psychiatry in the Los Angeles-Long Beach-Glendale, CA market, with the plurality of this provider's patient population coming from Los Angeles, CA. This provider's primary affiliated billing organization is PROVIDENCE SAINT JOHNS MEDICAL FOUNDATION (NPI: 1770093734; TIN: 814542216) and primary practice location at 90404-2050.

Merrill's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 300 traditional Medicare patients, billed 3,316 HCPCS/CPT codes, and received $264,746 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 1,799 prescription claims across 222 beneficiaries totaling $143,449 in drug costs, led by Belsomra (Suvorexant). Open Payments data shows 17 records totaling $6,758. 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 from a lower plateau to a higher plateau, from $84,785 to $264,746. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $40,385 and ending at $143,449. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.