Han-Jong Koh, MD
NPI 1619962263ActiveIndividual· Internal Medicine· Leesburg, VA
Internal Medicine (MD) in Leesburg, Virginia, trained at Medical College of Wisconsin (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $630,754 for 3,820 claims, against $178,488 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $342.34 in all, mostly food and beverage.
Overview
| NPI | 1619962263 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Sep 20, 2005 |
| Last updated in NPPES | Apr 25, 2024 |
| Certified by provider | Apr 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 0101051485 | 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 - Internal Medicine (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 303 |
|---|---|
| Services billed | 2,534 across 37 procedure codes |
| Paid by Medicare | $178,488 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,820 · 8,430 30-day fills |
|---|---|
| Patients | 269 |
| Total drug cost | $630,754 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Inova Loudoun HospitalLeesburg, VA
Other facilities
- Five Star Home Health CareHome health agency · Chantilly, VA
Industry payments (Open Payments)
- 2025$342.34 · 15 payments from 11 companies
- 2024$23.36 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $92.96 | 3 |
| Amgen Inc. | $59.73 | 3 |
| Lilly USA, LLC | $28.88 | 1 |
| Astellas Pharma US Inc | $27.12 | 1 |
| Abbott Laboratories | $25.47 | 1 |
What the 2025 payments were for
- Food and Beverage$328.45 · 14 payments
- Education$13.89 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 66 internal medicine physicians in Leesburg · All internal medicine physicians in Virginia