Lars V. Swanson, MD
NPI 1457346686ActiveIndividual· Internal Medicine· Oshkosh, WI
Internal Medicine (MD) in Oshkosh, Wisconsin, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $1,395,589 for 19,231 claims, against $71,202 paid for services in 2024. Dexcom, Inc. reported $27.27 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1457346686 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 14, 2005 |
| Last updated in NPPES | Mar 19, 2025 |
| Certified by provider | Mar 19, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 44250 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 243 |
|---|---|
| Services billed | 1,360 across 52 procedure codes |
| Paid by Medicare | $71,202 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,231 · 43,630 30-day fills |
|---|---|
| Patients | 985 |
| Total drug cost | $1,395,589 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Internal Medicine |
Medical group
- Ascension Medical Group-Fox Valley Wisconsin, IncAppleton, WI · 259 clinicians
Hospital affiliation
- Ascension Ne Wisconsin - St Elizabeth CampusAppleton, WI
Other facilities
- Ascension at HomeHome health agency · Neenah, WI
- Compassus NeenahHospice · Neenah, WI
- Evergreen Health CenterNursing home · Oshkosh, WI
Industry payments (Open Payments)
- 2025$27.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $27.27 | 1 |
What the 2025 payments were for
- Food and Beverage$27.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 internal medicine physicians in Oshkosh · All internal medicine physicians in Wisconsin