William Allen Neaville, MD
NPI 1326009614ActiveIndividual· Allergy & Immunology· Dallas, TX
Allergy & Immunology (MD) in Dallas, Texas, trained at University of Arkansas College of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $29,300 for 233 claims, against $16,627 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 19 companies reporting payments in 2025, $1,822 in all, mostly food and beverage.
Overview
| NPI | 1326009614 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 28, 2006 |
| Last updated in NPPES | Apr 9, 2024 |
| Certified by provider | Apr 9, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | L6541 | TX |
| Pediatrics, Pediatric Allergy/Immunology | 2080P0201X | L6541 | 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) | Enrolled Practitioner - Allergy/Immunology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 1,282 across 16 procedure codes |
| Paid by Medicare | $16,627 |
Part D prescriptions in 2024
| Prescriptions (claims) | 233 · 347 30-day fills |
|---|---|
| Patients | 42 |
| Total drug cost | $29,300 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | University of Arkansas College of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
Medical group
- John Allen Van Wagoner, MD, PADenison, TX · 9 clinicians
Industry payments (Open Payments)
- 2025$1,822 · 95 payments from 19 companies
- 2024$951.43 · 44 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $381.41 | 16 |
| Astrazeneca Pharmaceuticals LP | $354.66 | 28 |
| Novartis Pharmaceuticals Corporation | $172.00 | 8 |
| Takeda Pharmaceuticals U.S.A., Inc. | $134.66 | 5 |
| Grifols USA, LLC | $117.99 | 6 |
What the 2025 payments were for
- Food and Beverage$1,822 · 95 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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