Physician

Gregory Paul Lemense, MD

According to 2025 Medicare claims, Gregory Lemense, MD (NPI: 1912904483) practices pulmonary disease in the Bozeman, MT market, with the plurality of this provider's patient population coming from Gallatin, MT. This provider's primary affiliated billing organization is BOZEMAN HEALTH DEACONESS HOSPITAL (NPI: 1619347390; TIN: 474717998) and primary practice location at 59718-2402. Lemense is affiliated with the Caravan Collaborative Pathways (ACO ID: A4604), Caravan Health ACO 50 LLC (ACO ID: A5160), MountainStar Care Partners ACO (ACO ID: A5181), Main Street Rural Health Sycamore ACO LLC (ACO ID: A5403), and Collaborative ACO 30, LLC (ACO ID: A5483), participating under the MSSP model.

Lemense's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 702 traditional Medicare patients, billed 2,194 HCPCS/CPT codes, and received $98,861 in Medicare payments. The top billing code was 99204 (New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more). Part D data shows 1,793 prescription claims across 327 beneficiaries totaling $1,289,053 in drug costs, led by Esbriet (Pirfenidone). DME data shows 821 claims. Open Payments data shows 3 records totaling $49. 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 higher plateau to a lower plateau, from $110,669 to $98,861. In contrast, Part D prescription costs have risen steadily, from $351,304 to $1,289,053. For DME billing, reported payments moved sharply higher in recent years, from $20,240 to $64,563.