Physician

John Dean Klemperer, MD

According to 2025 Medicare claims, John Klemperer, MD (NPI: 1457337172) practices cardiac surgery in the Bangor, ME market, with the plurality of this provider's patient population coming from Penobscot, ME. This provider's primary affiliated billing organization is EASTERN MAINE MEDICAL CENTER (NPI: 1790789147; TIN: 010211501) and primary practice location at 04401-6616. Klemperer is affiliated with the MaineHealth Accountable Care Organization (ACO ID: A1290), Community Care Partnership of Maine, LLC (ACO ID: A2831), and Beacon Rural Health, LLC (ACO ID: A5614), participating under the MSSP model.

Klemperer's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 100 traditional Medicare patients, billed 258 HCPCS/CPT codes, and received $97,370 in Medicare payments. The top billing code was 33533 (Coronary artery bypass using artery graft, 1 graft). Part D data shows 27 prescription claims across 15 beneficiaries totaling $1,019 in drug costs. Open Payments data shows 15 records totaling $10,287. 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 started with an early spike, then settled into a lower baseline, moving from $246,647 to $97,370. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $369 and ending at $1,019. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.