Karnail Singh, MD
NPI 1871593202ActiveIndividual· Internal Medicine· Lansdowne, VA
Internal Medicine (MD) with Inova Health Care Services and 1 other group, practicing in Lansdowne, Virginia. Their prescriptions cost Medicare Part D more than their services did: $99,199 for 736 claims, against $23,070 paid for services in 2024. Novo Nordisk Inc was the largest of 6 companies reporting payments in 2025, $251.48 in all, mostly food and beverage. Lists Inova Loudoun Hospital as a hospital affiliation.
Overview
| NPI | 1871593202 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 28, 2005 |
| Last updated in NPPES | Mar 3, 2026 |
| Certified by provider | Mar 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 0101058812 | VA |
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 - Hospitalist (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 73 |
|---|---|
| Services billed | 271 across 14 procedure codes |
| Paid by Medicare | $23,070 |
Part D prescriptions in 2024
| Prescriptions (claims) | 736 · 1,410 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $99,199 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical groups
- Inova Health Care ServicesAlexandria, VA · 1,817 clinicians
- Loudoun Medical Care PCLansdowne, VA · 2 clinicians
Hospital affiliation
- Inova Loudoun HospitalLeesburg, VA
Industry payments (Open Payments)
- 2025$251.48 · 9 payments from 6 companies
- 2024$152.69 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $138.97 | 4 |
| Abbvie Inc. | $31.06 | 1 |
| Astrazeneca Pharmaceuticals LP | $25.73 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $19.45 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $19.41 | 1 |
What the 2025 payments were for
- Food and Beverage$235.21 · 8 payments
- Education$16.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Lansdowne
- 1205836798
- 1225078587
- 1073670006
- 1154493641
- 1396917068
- 1508227836
- 1952381451
- 1043984115
- 1073508610
- 1184642761
- 1396386447
- 1619673076
All 19 internal medicine physicians in Lansdowne · All internal medicine physicians in Virginia