Physician

Katherine Rachel Van Oss, MD

According to 2025 Medicare claims, Katherine Oss, MD (NPI: 1801020474) practices preventive medicine in the Grand Rapids-Wyoming-Kentwood, MI market, with the plurality of this provider's patient population coming from Kent, MI. This provider's primary affiliated billing organization is SPECTRUM HEALTH PRIMARY CARE PARTNERS (NPI: 1235188673; TIN: 381358164) and primary practice location at 49546-8816. Oss is affiliated with the West Michigan Accountable Care Organization, LLC (ACO ID: A4626), participating under the MSSP model.

Oss' data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 114 traditional Medicare patients, billed 1,501 HCPCS/CPT codes, and received $46,906 in Medicare payments. The top billing code was 99205 (New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more). Part D data shows 222 prescription claims across 88 beneficiaries totaling $86,380 in drug costs, led by Teriparatide (Teriparatide). Open Payments data shows 3 records totaling $50. 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 has fewer than 5 years of reported Medicare Part B carrier billing data, so a reliable trend cannot be assigned. Concurrently, this provider has fewer than 5 years of reported Part D prescription costs data, so a reliable trend cannot be assigned. For DME billing, this provider has fewer than 5 years of reported data, so a reliable trend cannot be assigned.