Stephen R. Dernlan, MD
NPI 1083646608ActiveIndividual· Internal Medicine· Appleton, WI
Internal Medicine (MD) in Appleton, Wisconsin, licensed in WI, with an NPI issued in July 2006. Part D covered 709 prescriptions written in 2024, 84% of them generic.
Overview
| NPI | 1083646608 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 6, 2006 |
| Last updated in NPPES | Jun 1, 2023 |
| Certified by provider | Jun 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 30115-020 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (TN) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 709 · 1,527 30-day fills |
|---|---|
| Patients | 231 |
| Total drug cost | $53,328 |
| Generic share | 84% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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