Physician
Althea Marie Fernandez Diaz, MD
According to 2025 Medicare claims, Althea Diaz, MD (NPI: 1649838640) practices allergy/immunology in the New York-Jersey City-White Plains, NY-NJ market, with the plurality of this provider's patient population coming from Putnam, NY. This provider's primary affiliated billing organization is OPTUM MEDICAL CARE, P.C. (NPI: 1982643003; TIN: 133544120) and primary practice location at 10509-9998.
Diaz's data goes back to 2015 and runs through 2024. Part D data shows 238 prescription claims across 46 beneficiaries totaling $242,955 in drug costs, led by Hyqvia (Igg/Hyaluronidase,recombinant). 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 has fewer than 5 years of reported Medicare Part B carrier billing data, so a reliable trend cannot be assigned. Concurrently, Part D prescription costs have moved sharply higher in recent years, from $2,425 to $242,955. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.