Physician

Lynn Van Ummersen, MD

According to 2025 Medicare claims, Lynn Ummersen, MD (NPI: 1447211818) practices hematology/oncology in the Deltona-Daytona Beach-Ormond Beach, FL market, with the plurality of this provider's patient population coming from Volusia, FL. This provider's primary affiliated billing organization is FLORIDA CANCER SPECIALISTS & RESEARCH INSTITUTE, LLC (NPI: 1760590962; TIN: 65-0825133) and primary practice location at 32763-8399. Ummersen is affiliated with the Complete Health Accountable Care LLC (ACO ID: D0036), participating under the REACH model.

Ummersen's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 417 traditional Medicare patients, billed 101,271 HCPCS/CPT codes, and received $1,556,597 in Medicare payments. The top billing code was 99213 (Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more). Part D data shows 792 prescription claims across 145 beneficiaries totaling $1,161,687 in drug costs, led by Revlimid (Lenalidomide). 2018 DME data shows 35 claims. Open Payments data shows 84 records totaling $1,732. 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 $302,556 to $1,556,597. Similarly, Part D prescription costs have risen steadily, from $171,741 to $1,161,687. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.