Physician

Brian Neil Guttormsen, MD

According to 2025 Medicare claims, Brian Guttormsen, MD (NPI: 1629045232) practices interventional cardiology in the Appleton, WI market, with the plurality of this provider's patient population coming from Outagamie, WI. This provider's primary affiliated billing organization is ASCENSION MEDICAL GROUP-FOX VALLEY WISCONSIN, INC (NPI: 1831890177; TIN: 391127163) and primary practice location at 54913-8517. Guttormsen is affiliated with the THEDACARE ACO (ACO ID: A4988) and Ascension Care Management Health Partners Wisconsin, LLC (ACO ID: A5329), participating under the MSSP model.

Guttormsen's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 598 traditional Medicare patients, billed 1,731 HCPCS/CPT codes, and received $120,912 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 5,805 prescription claims across 896 beneficiaries totaling $1,485,046 in drug costs, led by Eliquis (Apixaban). Open Payments data shows 36 records totaling $1,149. 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 lower plateau to a higher plateau, from $81,691 to $120,912. Similarly, Part D prescription costs have moved sharply higher in recent years, from $98,012 to $1,485,046. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.