Charles Hamilton Williamson, MD
NPI 1396740122ActiveIndividual· Ophthalmology· Baton Rouge, LA
Ophthalmology (MD) in Baton Rouge, Louisiana, trained at Louisiana State University School of Medicine in Shreveport (class of 1977). In 2024 Medicare paid $74,591 for 635 patients, and Part D covered 328 of their prescriptions, 48% of them generic. Glaukos Corporation was the largest of 9 companies reporting payments in 2025, $6,511 in all, mostly consulting fees.
Overview
| NPI | 1396740122 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 17, 2005 |
| Last updated in NPPES | Jun 22, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 014115 | LA |
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 (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 635 |
|---|---|
| Services billed | 1,460 across 32 procedure codes |
| Paid by Medicare | $74,591 |
Part D prescriptions in 2024
| Prescriptions (claims) | 328 · 488 30-day fills |
|---|---|
| Patients | 111 |
| Total drug cost | $42,374 |
| Generic share | 48% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in Shreveport |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Ophthalmology |
Medical group
- Williamson Eye CenterDenham Springs, LA · 19 clinicians
Industry payments (Open Payments)
- 2025$6,511 · 15 payments from 9 companies
- 2024$893.44 · 20 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaukos Corporation | $5,773 | 2 |
| Microsurgical Technology, Inc. | $163.10 | 2 |
| Biotissue Holdings Inc. | $129.29 | 4 |
| Harrow Eye, LLC | $124.27 | 1 |
| Mallinckrodt Hospital Products Inc. | $117.45 | 1 |
What the 2025 payments were for
- Consulting Fee$5,600 · 1 payment
- Food and Beverage$837.63 · 12 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$73.17 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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