Junnan Chen, PHYSICIAN ASSISTANT
NPI 1780150425ActiveIndividual· Dermatology· Highland, MD
Dermatology (PHYSICIAN ASSISTANT) in Highland, Maryland, licensed in MD, with an NPI issued in October 2018. 67 Medicare patients in 2024, $14,487 paid; nearly all of their 104 Part D prescriptions were generic (93%). Sanofi-Aventis U.S. LLC was the largest of 5 companies reporting payments in 2025, $191.02 in all, mostly food and beverage.
Overview
| NPI | 1780150425 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PHYSICIAN ASSISTANT |
| Sole proprietor | No |
| NPI issued | Oct 21, 2018 |
| Last updated in NPPES | Sep 20, 2023 |
| Certified by provider | Sep 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | C06976 | MD |
| Physician Assistant | 363A00000X | C0006976 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 67 |
|---|---|
| Services billed | 285 across 24 procedure codes |
| Paid by Medicare | $14,487 |
Part D prescriptions in 2024
| Prescriptions (claims) | 104 · 109 30-day fills |
|---|---|
| Patients | 48 |
| Total drug cost | $3,196 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Industry payments (Open Payments)
- 2025$191.02 · 6 payments from 5 companies
- 2024$196.95 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sanofi-Aventis U.S. LLC | $72.00 | 1 |
| Janssen Biotech, Inc. | $61.87 | 2 |
| Botanix Sb Inc | $20.98 | 1 |
| Regeneron Healthcare Solutions, Inc. | $20.27 | 1 |
| Genzyme Corporation | $15.90 | 1 |
What the 2025 payments were for
- Food and Beverage$119.02 · 5 payments
- Education$72.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records