Physician
Grant H. Louie, M.D.
According to 2025 Medicare claims, Grant Louie, M.D. (NPI: 1306013214) practices rheumatology in the Frederick-Gaithersburg-Bethesda, MD market, with the plurality of this provider's patient population coming from Frederick, MD. This provider's primary affiliated billing organization is ARTHRITIS AND RHEUMATISM ASSOCIATES PC (NPI: 1447259866; TIN: 521072944) and primary practice location at 21702-4301. Louie is affiliated with the ACO West Virginia (ACO ID: A3563), participating under the MSSP model.
Louie's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 855 traditional Medicare patients, billed 230,796 HCPCS/CPT codes, and received $3,359,117 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 1,876 prescription claims across 296 beneficiaries totaling $1,267,402 in drug costs, led by Humira(Cf) Pen (Adalimumab). Open Payments data shows 2 records totaling $132. 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 $24,642 to $3,359,117. Similarly, Part D prescription costs have moved sharply higher in recent years, from $696,476 to $1,267,402. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.