Physician

Gregory K Harter, MD

According to 2025 Medicare claims, Gregory Harter, MD (NPI: 1134157415) practices family practice in the Waterloo-Cedar Falls, IA market, with the plurality of this provider's patient population coming from Black Hawk, IA. This provider's primary affiliated billing organization is CEDAR VALLEY MEDICAL SPECIALISTS PC (NPI: 1497794242; TIN: 421417307) and primary practice location at 50701-9330. Harter is affiliated with the UnityPoint Accountable Care, L.C. (ACO ID: A5170) and Main Street Rural Health Willow ACO LLC (ACO ID: A5404), participating under the MSSP model.

Harter's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 272 traditional Medicare patients, billed 4,296 HCPCS/CPT codes, and received $194,488 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 10,806 prescription claims across 549 beneficiaries totaling $1,069,671 in drug costs, led by Jardiance (Empagliflozin). DME data shows 334 claims. Open Payments data shows 137 records totaling $2,320. 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 $91,561 to $194,488. Similarly, Part D prescription costs have risen steadily, from $610,397 to $1,069,671. In contrast, DME billing represents a smaller volume and moved from a lower plateau to a higher plateau, from $16,801 to $24,725.