Physician

John Charles Merillat, MD

According to 2025 Medicare claims, John Merillat, MD (NPI: 1346280229) practices cardiac electrophysiology in the Modesto, CA market, with the plurality of this provider's patient population coming from Stanislaus, CA. This provider's primary affiliated billing organization is VALLEY HEART ASSOCIATES MEDICAL GROUP INC (NPI: 1689614562; TIN: 942252241) and primary practice location at 95382-1546.

Merillat's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 976 traditional Medicare patients, billed 4,899 HCPCS/CPT codes, and received $305,010 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 4,023 prescription claims across 532 beneficiaries totaling $601,728 in drug costs, led by Eliquis (Apixaban). Open Payments data shows 21 records totaling $712. 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 changed little. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $139,814 to $601,728. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.