Hwang Hyun Junn, M.D.
NPI 1659539195ActiveIndividual· General Practice· Annandale, VA
General Practice (M.D.) in Annandale, Virginia, licensed in VA and CA, with an NPI issued in May 2008. Their prescriptions cost Medicare Part D more than their services did: $969,248 for 5,160 claims, against $254,706 paid for services in 2024. Sumitomo Pharma America, Inc. reported $13.49 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1659539195 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 31, 2008 |
| Last updated in NPPES | Apr 8, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 0101242585 | VA |
| General Practice | 208D00000X | A 103692 | CA |
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 (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 4,979 across 45 procedure codes |
| Paid by Medicare | $254,706 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,160 · 12,224 30-day fills |
|---|---|
| Patients | 303 |
| Total drug cost | $969,248 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Industry payments (Open Payments)
- 2025$13.49 · 1 payment from 1 company
- 2024$86.07 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $13.49 | 1 |
What the 2025 payments were for
- Food and Beverage$13.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other general practitioners in Annandale
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