Physician
Day Smith Lennep, M.D.
According to 2025 Medicare claims, Day Lennep, M.D. (NPI: 1538509955) practices rheumatology in the Jackson, MS market, with the plurality of this provider's patient population coming from Rankin, MS. This provider's primary affiliated billing organization is MISSISSIPPI ARTHRITIS CLINIC PLLC (NPI: 1275713471; TIN: 261325922) and primary practice location at 39232-1248. Lennep is affiliated with the On Belay Health Solutions (ACO ID: A5260) and CoreHealth Alliance LLC (ACO ID: A5645), participating under the MSSP model.
Lennep's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 521 traditional Medicare patients, billed 153,593 HCPCS/CPT codes, and received $1,481,578 in Medicare payments. The top billing code was 36415 (Insertion of needle into vein for collection of blood sample). Part D data shows 1,326 prescription claims across 328 beneficiaries totaling $2,052,699 in drug costs, led by Krystexxa (Pegloticase). 2017 DME data shows 24 claims. Open Payments data shows 148 records totaling $2,538. 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 $19,863 to $1,481,578. Similarly, Part D prescription costs have moved sharply higher in recent years, from $16,344 to $2,052,699. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.