Melissa Dang, MD
NPI 1609453398ActiveIndividual· Allergy & Immunology· Orange, CA
Allergy & Immunology (MD) in Orange, California, licensed in CA, with an NPI issued in March 2021. Part D covered 70 prescriptions written in 2024, 60% of them generic. Biocryst US Sales Co., LLC was the largest of 7 companies reporting payments in 2025, $788.50 in all, mostly food and beverage.
Overview
| NPI | 1609453398 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 27, 2021 |
| Last updated in NPPES | Sep 4, 2026 |
| Certified by provider | Sep 4, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | A211755 | CA |
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 Order and Referring Only - Allergy/Immunology (CO) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 70 · 94 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $20,806 |
| Generic share | 60% of claims |
Industry payments (Open Payments)
- 2025$788.50 · 8 payments from 7 companies
- 2024$334.50 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biocryst US Sales Co., LLC | $222.52 | 2 |
| Biocryst Pharmaceuticals, Inc. | $150.80 | 1 |
| Pharming Healthcare, Inc. | $124.87 | 1 |
| Astrazeneca Pharmaceuticals LP | $124.81 | 1 |
| Genzyme Corporation | $79.02 | 1 |
What the 2025 payments were for
- Food and Beverage$788.50 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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