William Bruns Sullivan
NPI 1033177894ActiveIndividual· Specialist· Hattiesburg, MS
Specialist in Hattiesburg, Mississippi, trained at University of Alabama School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $83,595 for 594 claims, against $3,733 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 9 companies reporting payments in 2025, $1,207 in all, mostly food and beverage.
Overview
| NPI | 1033177894 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | May 2, 2006 |
| Last updated in NPPES | May 8, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 12999 | MS |
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 - Allergy/Immunology (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 19 |
|---|---|
| Services billed | 280 across 9 procedure codes |
| Paid by Medicare | $3,733 |
Part D prescriptions in 2024
| Prescriptions (claims) | 594 · 842 30-day fills |
|---|---|
| Patients | 68 |
| Total drug cost | $83,595 |
| Generic share | 70% of claims |
Education and affiliations
| Medical school | University of Alabama School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
Medical group
- Mississippi Asthma and Allergy Clinic PAJackson, MS · 14 clinicians
Industry payments (Open Payments)
- 2025$1,207 · 58 payments from 9 companies
- 2024$1,761 · 91 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $299.02 | 12 |
| Glaxosmithkline, LLC. | $285.06 | 15 |
| Astrazeneca Pharmaceuticals LP | $233.70 | 16 |
| Novartis Pharmaceuticals Corporation | $194.92 | 7 |
| Csl Behring | $60.05 | 2 |
What the 2025 payments were for
- Food and Beverage$1,207 · 58 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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