Nancy Diane Efferson-Bonachea, M.D.
NPI 1932173234ActiveIndividual· Ophthalmology· Manchester, NH
Ophthalmology (M.D.) in Manchester, New Hampshire, trained at Tufts University School of Medicine (class of 1990). In 2024 Medicare paid $931,409 for 599 patients, and Part D covered 180 of their prescriptions, 79% of them generic. Regeneron Healthcare Solutions, Inc. was the largest of 3 companies reporting payments in 2024, $87.80 in all, mostly food and beverage.
Overview
| NPI | 1932173234 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 14, 2006 |
| Last updated in NPPES | Oct 13, 2026 |
| Certified by provider | Oct 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 12932 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 599 |
|---|---|
| Services billed | 11,470 across 34 procedure codes |
| Paid by Medicare | $931,409 |
Part D prescriptions in 2024
| Prescriptions (claims) | 180 · 307 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $5,178 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Ophthalmology |
Medical group
- Nh Eye Associates PLLCLondonderry, NH · 12 clinicians
Industry payments (Open Payments)
- 2024$87.80 · 4 payments from 3 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $54.20 | 2 |
| Apellis Pharmaceuticals, Inc. | $17.19 | 1 |
| Oyster Point Pharma, Inc. | $16.41 | 1 |
What the 2024 payments were for
- Food and Beverage$70.61 · 3 payments
- Education$17.19 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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