Marilu O'Byrne, M.D.
NPI 1083772453 · Ophthalmology Physician · Mandeville, LA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilu O'Byrne, M.D. is a Ophthalmology Physician provider in Mandeville, LA (NPI 1083772453).
Provider details
- NPI number
- 1083772453
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 016256 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,007 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 992 | $110 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 355 | $14 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 308 | $23 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 203 | $150 |
| Imaging of Optic Nerve92133 | 181 | $32 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing92201 | 176 | $22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,204 | 295 |
| Cyclosporinebrand: Restasis | 610 | 338 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 547 | 130 |
| Prednisolone Acetate | 350 | 263 |
| Ketorolac Tromethamine | 144 | 97 |
| Cyclosporine | 128 | 78 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 106 | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,239 across 46 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-05
- Last updated
- 2008-05-29
Frequently asked questions
- What is Marilu O'Byrne's NPI number?
- Marilu O'Byrne's National Provider Identifier (NPI) is 1083772453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilu O'Byrne's specialty?
- Marilu O'Byrne is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Marilu O'Byrne located?
- Marilu O'Byrne's practice location on file with NPPES is 1580 W Causeway Approach, Mandeville, LA 70471-3033.
- What is Marilu O'Byrne's phone number?
- The practice phone number listed in the NPPES registry for Marilu O'Byrne is (985) 624-5573.
- Does Marilu O'Byrne accept Medicare?
- Marilu O'Byrne is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilu O'Byrne's NPI active?
- Yes — Marilu O'Byrne's NPI (1083772453) is active in the NPPES registry as of the last update on 2008-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.