Njambi Wanjiru Mathenge, M.D.
NPI 1285053488ActiveIndividual· Internal Medicine, Cardiovascular Disease· Lebanon, NH
Internal Medicine, Cardiovascular Disease (M.D.) with Dartmouth-Hitchcock Clinic and 1 other group, practicing in Lebanon, New Hampshire. 43 Medicare patients in 2024, $11,850 paid; nearly all of their 79 Part D prescriptions were generic (97%). Spectrawave, Inc reported $19.31 in payments in 2025, mostly food and beverage. Lists Alice Peck Day Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1285053488 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 15, 2014 |
| Last updated in NPPES | Dec 15, 2025 |
| Certified by provider | Dec 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 33764 | NH |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Cardiovascular Disease (Cardiology) (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 43 |
|---|---|
| Services billed | 97 across 20 procedure codes |
| Paid by Medicare | $11,850 |
Part D prescriptions in 2024
| Prescriptions (claims) | 79 · 234 30-day fills |
|---|---|
| Patients | 34 |
| Total drug cost | $5,571 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical groups
- Dartmouth-Hitchcock ClinicLebanon, NH · 1,472 clinicians
- Mary Hitchcock Memorial HospitalManchester, NH · 1,280 clinicians
Hospital affiliations
- Alice Peck Day Memorial HospitalLebanon, NH
- Cheshire Medical CenterKeene, NH
- Mary Hitchcock Memorial HospitalLebanon, NH
- Northeastern Vermont Regional HospitalSaint Johnsbury, VT
- Rutland Regional Medical CenterRutland, VT
Industry payments (Open Payments)
- 2025$19.31 · 1 payment from 1 company
- 2024$1,121 · 12 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Spectrawave, Inc | $19.31 | 1 |
What the 2025 payments were for
- Food and Beverage$19.31 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 58 cardiologists in Lebanon · All cardiologists in New Hampshire