Matthew J. Karpenko, DO
NPI 1912118647ActiveIndividual· Internal Medicine, Hematology & Oncology· Salisbury, MD
Internal Medicine, Hematology & Oncology (DO) in Salisbury, Maryland, trained at Lake Erie College of Osteopathic Medicine, Erie (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $1,487,860 for 602 claims, against $16,671 paid for services in 2024. Abbvie Inc. was the largest of 5 companies reporting payments in 2025, $117.45 in all, mostly food and beverage.
Overview
| NPI | 1912118647 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 24, 2007 |
| Last updated in NPPES | Aug 14, 2026 |
| Certified by provider | Aug 14, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 2010-01037 | NC |
| Internal Medicine, Medical Oncology | 207RX0202X | 0102209761 | VA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 0102209761 | VA |
| Internal Medicine, Hematology | 207RH0000X | 0102209761 | VA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 254036 | NY |
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 - Hematology/Oncology (MD); Practitioner - Hematology/Oncology (NC); Practitioner - Hematology/Oncology (NY); Practitioner - Hematology/Oncology (SC); Practitioner - Hematology/Oncology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 163 |
|---|---|
| Services billed | 258 across 15 procedure codes |
| Paid by Medicare | $16,671 |
Part D prescriptions in 2024
| Prescriptions (claims) | 602 · 723 30-day fills |
|---|---|
| Patients | 161 |
| Total drug cost | $1,487,860 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | Lake Erie College of Osteopathic Medicine, Erie |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical groups
- Musc Community PhysiciansCentennial, CO · 1,544 clinicians
- Caromont Medical Group IncGastonia, NC · 424 clinicians
- Martinsville Physician Practices LLCMartinsville, VA · 37 clinicians
Hospital affiliations
- Cape Fear Valley Medical CenterFayetteville, NC
- Musc Medical CenterCharleston, SC
- Russell County HospitalLebanon, VA
- Smyth County Community HospitalMarion, VA
- Sovah Health DanvilleDanville, VA
Industry payments (Open Payments)
- 2025$117.45 · 6 payments from 5 companies
- 2024$269.40 · 14 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $35.60 | 2 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $23.49 | 1 |
| Merck Sharp & Dohme LLC | $21.50 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $19.17 | 1 |
| Gilead Sciences, Inc. | $17.69 | 1 |
What the 2025 payments were for
- Food and Beverage$117.45 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 hematologist-oncologists in Salisbury · All hematologist-oncologists in Maryland