William C. Park, M.D.
NPI 1942458237ActiveIndividual· Ophthalmology· Aurora, IL
Ophthalmology (M.D.) in Aurora, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 2008). In 2024 Medicare paid $100,048 for 375 patients, and Part D covered 649 of their prescriptions, 59% of them generic. Alcon Vision LLC was the largest of 8 companies reporting payments in 2025, $715.26 in all, mostly food and beverage.
Overview
| NPI | 1942458237 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 29, 2008 |
| Last updated in NPPES | Aug 12, 2024 |
| Certified by provider | Aug 12, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 036.121758 | IL |
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 - Ophthalmology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 375 |
|---|---|
| Services billed | 1,203 across 34 procedure codes |
| Paid by Medicare | $100,048 |
Part D prescriptions in 2024
| Prescriptions (claims) | 649 · 814 30-day fills |
|---|---|
| Patients | 194 |
| Total drug cost | $33,261 |
| Generic share | 59% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Ophthalmology |
Medical group
- Aurora Eye Clinic LtdAurora, IL · 8 clinicians
Hospital affiliation
- Presence Mercy Medical CenterAurora, IL
Industry payments (Open Payments)
- 2025$715.26 · 25 payments from 8 companies
- 2024$544.83 · 20 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $476.68 | 16 |
| Astellas Pharma US Inc | $98.25 | 3 |
| Regeneron Healthcare Solutions, Inc. | $37.88 | 1 |
| Abbvie Inc. | $26.76 | 1 |
| Johnson & Johnson Surgical Vision, Inc. | $25.28 | 1 |
What the 2025 payments were for
- Food and Beverage$715.26 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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