Erin Terpstra, MD, PHD

In their first decade of practice, Erin Terpstra represents the newer generation of internal medicine providers, MD, PHD, after earning their medical degree at Other in 2019. Erin currently practices across 2 facilities, including Sanford Clinic in Sioux Falls, South Dakota. Their National Provider Identifier (NPI) is 1366005662, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

CMS Medicare data shows Erin Terpstra as a lower-volume internal medicine provider, treating approximately 186 Medicare beneficiaries and delivering 436 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.

Under the Physician Payments Sunshine Act, CMS reports that Erin Terpstra received $28 in industry payments in 2023. Payments at this scale are typical for most practicing physicians and generally reflect routine educational activities.