Rex W. Appenfeller, M.D.
NPI 1710983523ActiveIndividual· Internal Medicine· Lincoln, RI
Internal Medicine (M.D.) in Lincoln, Rhode Island, licensed in RI, with an NPI issued in June 2005. Their prescriptions cost Medicare Part D more than their services did: $646,016 for 7,829 claims, against $37,773 paid for services in 2024. Novo Nordisk Inc reported $21.77 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1710983523 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | Oct 19, 2020 |
| Certified by provider | Oct 19, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD05740 | RI |
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 (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 227 |
|---|---|
| Services billed | 1,588 across 39 procedure codes |
| Paid by Medicare | $37,773 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,829 · 18,767 30-day fills |
|---|---|
| Patients | 545 |
| Total drug cost | $646,016 |
| Generic share | 91% of claims |
Industry payments (Open Payments)
- 2025$21.77 · 1 payment from 1 company
- 2024$21.25 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $21.77 | 1 |
What the 2025 payments were for
- Food and Beverage$21.77 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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