Marielle Mahan, MD
NPI 1487115010ActiveIndividual· Ophthalmology· Bethesda, MD
Ophthalmology (MD) in Bethesda, Maryland, trained at Georgetown University School of Medicine (class of 2019). In 2024 Medicare paid $20,430 for 63 patients, and Part D covered 275 of their prescriptions, 83% of them generic. Sun Pharmaceutical Industries Inc. was the largest of 2 companies reporting payments in 2025, $178.10 in all, mostly food and beverage.
Overview
| NPI | 1487115010 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 27, 2019 |
| Last updated in NPPES | Oct 2, 2025 |
| Certified by provider | Oct 2, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | D0103387 | MD |
| Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery | 207WX0200X | D0103387 | MD |
| Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery | 207WX0200X | MD600004334 | DC |
| Ophthalmology | 207W00000X | MD600004334 | DC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 63 |
|---|---|
| Services billed | 132 across 35 procedure codes |
| Paid by Medicare | $20,430 |
Part D prescriptions in 2024
| Prescriptions (claims) | 275 · 283 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $3,801 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Ophthalmology |
Medical group
- Visionary Ophthalmology LLCRockville, MD · 17 clinicians
Industry payments (Open Payments)
- 2025$178.10 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sun Pharmaceutical Industries Inc. | $89.45 | 1 |
| Amgen Inc. | $88.65 | 2 |
What the 2025 payments were for
- Food and Beverage$178.10 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 57 ophthalmologists in Bethesda · All ophthalmologists in Maryland