Adrianne Dewalt Vaughn, M.D.
NPI 1649263740ActiveIndividual· Allergy & Immunology, Allergy· San Antonio, TX
Opted out of Medicare from November 2023 to November 2027. Allergy & Immunology, Allergy (M.D.) in San Antonio, Texas, licensed in TX, with an NPI issued in August 2005. Part D covered 677 prescriptions written in 2024, 68% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 9 companies reporting payments in 2025, $1,513 in all, mostly food and beverage.
Overview
| NPI | 1649263740 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 24, 2005 |
| Last updated in NPPES | Nov 25, 2023 |
| Certified by provider | Nov 25, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology, Allergy Primary | 207KA0200X | J1970 | TX |
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 |
|---|---|
| Opt-out | Opted out Nov 25, 2023 – Nov 25, 2027 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 677 · 1,091 30-day fills |
|---|---|
| Patients | 154 |
| Total drug cost | $185,968 |
| Generic share | 68% of claims |
Industry payments (Open Payments)
- 2025$1,513 · 27 payments from 9 companies
- 2024$1,253 · 19 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $523.06 | 10 |
| Glaxosmithkline, LLC. | $283.81 | 6 |
| Novartis Pharmaceuticals Corporation | $199.97 | 4 |
| Ars Pharmaceuticals Operations, Inc. | $112.13 | 1 |
| Genzyme Corporation | $109.88 | 1 |
What the 2025 payments were for
- Food and Beverage$1,513 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology, Allergy providers in San Antonio
- 1356966287
- 1124399092
- 1295956332
- 1902844590
- 1407894454
- 1073963526
- 1720029218
- 1770709370
- 1407863533
- 1104891365
- 1023080124
- 1326087081