Nathalie Rioux, M.D.
NPI 1164510095ActiveIndividual· Ophthalmology, Glaucoma Specialist· Greenfield, MA
Ophthalmology, Glaucoma Specialist (M.D.) with Rioux Eye Center Inc, practicing in Greenfield, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $804,311 for 4,641 claims, against $457,062 paid for services in 2024. Ocular Therapeutix, Inc. was the largest of 4 companies reporting payments in 2025, $160.69 in all, mostly food and beverage. Lists Cooley Dickinson Hospital Inc,the as a hospital affiliation.
Overview
| NPI | 1164510095 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 10, 2006 |
| Last updated in NPPES | Jan 15, 2022 |
| Certified by provider | Jan 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Glaucoma Specialist Primary | 207WX0009X | 156165 | MA |
| Ophthalmology | 207W00000X | 156165 | MA |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,787 |
|---|---|
| Services billed | 5,620 across 41 procedure codes |
| Paid by Medicare | $457,062 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,641 · 8,784 30-day fills |
|---|---|
| Patients | 1,086 |
| Total drug cost | $804,311 |
| Generic share | 62% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Ophthalmology |
Medical group
- Rioux Eye Center IncGreenfield, MA · 2 clinicians
Hospital affiliation
- Cooley Dickinson Hospital Inc,theNorthampton, MA
Industry payments (Open Payments)
- 2025$160.69 · 8 payments from 4 companies
- 2024$207.18 · 11 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ocular Therapeutix, Inc. | $84.93 | 5 |
| Alcon Vision LLC | $30.88 | 1 |
| Bausch & Lomb Americas Inc. | $24.98 | 1 |
| Johnson & Johnson Surgical Vision, Inc. | $19.90 | 1 |
What the 2025 payments were for
- Food and Beverage$160.69 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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