Forest Arnold, DO
NPI 1134119472ActiveIndividual· Internal Medicine, Infectious Disease· Louisville, KY
Internal Medicine, Infectious Disease (DO) in Louisville, Kentucky, trained at West Virginia School of Osteopathic Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $1,115,425 for 806 claims, against $10,862 paid for services in 2024. Astellas Pharma US Inc was the largest of 9 companies reporting payments in 2025, $543.68 in all, mostly food and beverage.
Overview
| NPI | 1134119472 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Oct 27, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 02698 | KY |
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 - Infectious Disease (KY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 147 across 12 procedure codes |
| Paid by Medicare | $10,862 |
Part D prescriptions in 2024
| Prescriptions (claims) | 806 · 816 30-day fills |
|---|---|
| Patients | 242 |
| Total drug cost | $1,115,425 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | West Virginia School of Osteopathic Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Infectious Disease |
Medical groups
- University of Louisville Physicians IncLouisville, KY · 1,445 clinicians
- University of Louisville Research Foundation IncLouisville, KY · 8 clinicians
Hospital affiliation
- University of Louisville HospitalLouisville, KY
Industry payments (Open Payments)
- 2025$543.68 · 23 payments from 9 companies
- 2024$762.22 · 36 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $137.92 | 3 |
| Pfizer Inc. | $119.62 | 6 |
| Shionogi Inc | $86.49 | 3 |
| Viiv Healthcare Company | $57.14 | 3 |
| Abbvie Inc. | $56.54 | 3 |
What the 2025 payments were for
- Food and Beverage$460.68 · 22 payments
- Education$83.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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