Marilu O'Byrne, M.D.
NPI 1083772453ActiveIndividual· Ophthalmology· Mandeville, LA
Ophthalmology (M.D.) in Mandeville, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $1,913,673 for 4,129 claims, against $228,428 paid for services in 2024. Bausch & Lomb Americas Inc. was the largest of 12 companies reporting payments in 2025, $1,643 in all, mostly food and beverage.
Overview
| NPI | 1083772453 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 5, 2006 |
| Last updated in NPPES | May 29, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 016256 | 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 | 1,015 |
|---|---|
| Services billed | 3,091 across 40 procedure codes |
| Paid by Medicare | $228,428 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,129 · 7,276 30-day fills |
|---|---|
| Patients | 986 |
| Total drug cost | $1,913,673 |
| Generic share | 43% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Ophthalmology |
Medical groups
- Eye Associates LLCGretna, LA · 6 clinicians
- Benjamin Guidry MD, LLCMandeville, LA · 6 clinicians
Hospital affiliation
- Sterling Surgical HospitalSlidell, LA
Industry payments (Open Payments)
- 2025$1,643 · 51 payments from 12 companies
- 2024$1,239 · 46 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $409.14 | 10 |
| Tarsus Pharmaceuticals, Inc. | $318.27 | 15 |
| Glaukos Corporation | $249.25 | 2 |
| Alcon Vision LLC | $232.86 | 9 |
| Mallinckrodt Hospital Products Inc. | $146.21 | 1 |
What the 2025 payments were for
- Food and Beverage$1,643 · 51 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Mandeville
- 1295957488
- 1407853401
- 1124331376