Oksana O. Karpov, D.O
NPI 1821294414ActiveIndividual· Internal Medicine· Hagerstown, MD
Internal Medicine (D.O) in Hagerstown, Maryland, trained at Lake Erie College of Osteopathic Medicine, Erie (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $20,941 for 326 claims, against $12,677 paid for services in 2024. Abbvie Inc. reported $28.27 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1821294414 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O |
| Sole proprietor | Yes |
| NPI issued | Jun 21, 2007 |
| Last updated in NPPES | Mar 12, 2026 |
| Certified by provider | Mar 12, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | H0105787 | MD |
| Internal Medicine | 207R00000X | OS014556 | PA |
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 (MD); Practitioner - Internal Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 80 |
|---|---|
| Services billed | 303 across 28 procedure codes |
| Paid by Medicare | $12,677 |
Part D prescriptions in 2024
| Prescriptions (claims) | 326 · 633 30-day fills |
|---|---|
| Patients | 64 |
| Total drug cost | $20,941 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Lake Erie College of Osteopathic Medicine, Erie |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Internal Medicine |
Medical groups
- Meritus Medical Center IncHagerstown, MD · 743 clinicians
- Medical Practices of Antietam, LLCHagerstown, MD · 234 clinicians
Hospital affiliation
- Good Samaritan HospitalVincennes, IN
Industry payments (Open Payments)
- 2025$28.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $28.27 | 1 |
What the 2025 payments were for
- Food and Beverage$28.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Hagerstown · All internal medicine physicians in Maryland