Nancy Efferson-Bonachea, M.D.
NPI 1932173234 · Ophthalmology Physician · Manchester, NH
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Efferson-Bonachea, M.D. is a Ophthalmology Physician provider in Manchester, NH (NPI 1932173234).
Provider details
- NPI number
- 1932173234
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 12932 (NH)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,378 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) |
|---|---|---|
| Imaging of Retina92134 | 1,300 | $41 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 571 | $131 |
| Injection of Drug Into Eye67028 | 467 | $116 |
| Established Patient Complete Exam of Visual System92014 | 362 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 204 | $93 |
| Extended Exam of the Back Part of the Eye With Retinal Drawing92201 | 143 | $25 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 54 | 12 |
| Timolol Maleate | 30 | 12 |
| Brimonidine Tartrate | 27 | — |
| Prednisolone Acetate | 25 | 16 |
| Ketorolac Tromethamine | 20 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$88 across 4 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
Additional practice locations (1)
- 25 Buttrick Rd Ste C3Londonderry, NH 03053-3353Phone: (603) 432-8801
Registry dates
- Enumerated
- 2006-02-14
- Last updated
- 2024-07-05
- Certified
- 2024-07-05
Frequently asked questions
- What is Nancy Efferson-Bonachea's NPI number?
- Nancy Efferson-Bonachea's National Provider Identifier (NPI) is 1932173234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Efferson-Bonachea's specialty?
- Nancy Efferson-Bonachea is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Efferson-Bonachea located?
- Nancy Efferson-Bonachea's practice location on file with NPPES is 764 2nd St, Manchester, NH 03102-5210.
- What is Nancy Efferson-Bonachea's phone number?
- The practice phone number listed in the NPPES registry for Nancy Efferson-Bonachea is (603) 669-3925.
- Does Nancy Efferson-Bonachea accept Medicare?
- Nancy Efferson-Bonachea is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Efferson-Bonachea's NPI active?
- Yes — Nancy Efferson-Bonachea's NPI (1932173234) is active in the NPPES registry as of the last update on 2024-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.