Benjamin J. Duffy, D.O.
NPI 1144210857ActiveIndividual· Internal Medicine, Bariatric Medicine· Neenah, WI
Internal Medicine, Bariatric Medicine (D.O.) with Thedacare, Incorporated, practicing in Neenah, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $11,811 for 220 claims, against $6,539 paid for services in 2024. Novo Nordisk Inc reported $2,135 in payments in 2025, mostly consulting fees. Lists Thedacare Medical Center - Berlin Inc and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1144210857 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Oct 25, 2005 |
| Last updated in NPPES | Jun 6, 2024 |
| Certified by provider | Jun 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Bariatric Medicine Primary | 207RB0002X | 48370-021 | WI |
| Internal Medicine | 207R00000X | 48370-021 | WI |
| Hospitalist | 208M00000X | 48370 | 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 | 55 |
|---|---|
| Services billed | 216 across 24 procedure codes |
| Paid by Medicare | $6,539 |
Part D prescriptions in 2024
| Prescriptions (claims) | 220 · 272 30-day fills |
|---|---|
| Patients | 65 |
| Total drug cost | $11,811 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
| Telehealth | Offers telehealth |
Medical group
- Thedacare, IncorporatedWaupaca, WI · 647 clinicians
Hospital affiliations
- Thedacare Medical Center - Berlin IncBerlin, WI
- Thedacare Medical Center-WaupacaWaupaca, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$2,135 · 3 payments from 1 company
- 2024$61.54 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $2,135 | 3 |
What the 2025 payments were for
- Consulting Fee$2,130 · 2 payments
- Food and Beverage$4.73 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records