William A. Parker Jr., MD
NPI 1780665430ActiveIndividual· Allergy & Immunology· Beavercreek, OH
Allergy & Immunology (MD) in Beavercreek, Ohio, trained at Tulane University School of Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $263,274 for 600 claims, against $146,035 paid for services in 2024. Incyte Corporation was the largest of 10 companies reporting payments in 2025, $2,813 in all, mostly consulting fees.
Overview
| NPI | 1780665430 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 9, 2005 |
| Last updated in NPPES | Nov 22, 2021 |
| Certified by provider | Nov 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 35-05-8156-P | OH |
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 (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 8,363 across 27 procedure codes |
| Paid by Medicare | $146,035 |
Part D prescriptions in 2024
| Prescriptions (claims) | 600 · 837 30-day fills |
|---|---|
| Patients | 138 |
| Total drug cost | $263,274 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Allergy/Immunology |
| Secondary specialties | Pediatric Medicine |
Medical group
- Psf PLLCMilford, OH · 98 clinicians
Hospital affiliation
- Kettering Health DaytonDayton, OH
Industry payments (Open Payments)
- 2025$2,813 · 35 payments from 10 companies
- 2024$1,196 · 38 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $1,752 | 2 |
| Astrazeneca Pharmaceuticals LP | $514.90 | 14 |
| Genzyme Corporation | $178.20 | 5 |
| Glaxosmithkline, LLC. | $164.98 | 4 |
| Novartis Pharmaceuticals Corporation | $72.27 | 3 |
What the 2025 payments were for
- Consulting Fee$1,700 · 1 payment
- Food and Beverage$1,113 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology providers in Beavercreek
- 1104036813