Physician
John J Mazur, M.D.
According to 2025 Medicare claims, John Mazur, M.D. (NPI: 1659364651) practices pulmonary disease in the Great Falls, MT market, with the plurality of this provider's patient population coming from Cascade, MT. This provider's primary affiliated billing organization is GREAT FALLS CLINIC LLC (NPI: 1801897780; TIN: 841396628) and primary practice location at 59405-5240. Mazur is affiliated with the Collaborative ACO 30, LLC (ACO ID: A5483) and PRIVIA QUALITY NETWORK - I LLC (ACO ID: A5533), participating under the MSSP model.
Mazur's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 372 traditional Medicare patients, billed 4,075 HCPCS/CPT codes, and received $218,979 in Medicare payments. The top billing code was 90677 (Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use). Part D data shows 3,020 prescription claims across 360 beneficiaries totaling $2,115,982 in drug costs, led by Opsumit (Macitentan). DME data shows 2,723 claims. Open Payments data shows 47 records totaling $1,159. 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 $219,255 to $218,979. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $734,730 to $2,115,982. For DME billing, reported payments moved up and down with repeated peaks and valleys, starting at $188,127 and ending at $161,013.