Chang Su, MD
NPI 1639753650ActiveIndividual· Allergy & Immunology· Portland, OR
Allergy & Immunology (MD) in Portland, Oregon, licensed in OR, with an NPI issued in May 2021. Part D covered 44 prescriptions written in 2024, 80% of them generic. Glaxosmithkline, LLC. was the largest of 2 companies reporting payments in 2025, $10,068 in all, mostly compensation for serving as faculty or as a speaker for a me.
Overview
| NPI | 1639753650 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 6, 2021 |
| Last updated in NPPES | Oct 7, 2026 |
| Certified by provider | Oct 7, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | MD230823 | OR |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 44 · 58 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $6,947 |
| Generic share | 80% of claims |
Industry payments (Open Payments)
- 2025$10,068 · 2 payments from 2 companies
- 2024$32.45 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $10,000 | 1 |
| Regeneron Healthcare Solutions, Inc. | $68.20 | 1 |
What the 2025 payments were for
- Compensation for serving as faculty or as a speaker for a medical education program$10,000 · 1 payment
- Food and Beverage$68.20 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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