Nikolaos Zacharias, M.D.
NPI 1023251717ActiveIndividual· Surgery, Vascular Surgery· Lebanon, NH
Surgery, Vascular Surgery (M.D.) with Massachusetts General Physicians Organization Inc and 1 other group, practicing in Lebanon, New Hampshire. Mostly services rather than prescriptions: Medicare paid $135,966 for 901 patients in 2024, with only 28 Part D claims. W. L. Gore & Associates, Inc. reported $68.93 in payments in 2025, mostly food and beverage. Lists Massachusetts General Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1023251717 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 12, 2009 |
| Last updated in NPPES | Jan 27, 2026 |
| Certified by provider | Jan 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | 17544 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Vascular Surgery (MA); Practitioner - Vascular Surgery (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 901 |
|---|---|
| Services billed | 1,483 across 120 procedure codes |
| Paid by Medicare | $135,966 |
Part D prescriptions in 2024
| Prescriptions (claims) | 28 · 32 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $185.01 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Vascular Surgery |
| Telehealth | Offers telehealth |
Medical groups
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
- Foundation Medical Partners IncMilford, NH · 317 clinicians
Hospital affiliations
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
- Southern Nh Medical CenterNashua, NH
Other facilities
- Mass General Brigham Home Care, IncHome health agency · Newton, MA
Industry payments (Open Payments)
- 2025$68.93 · 3 payments from 1 company
- 2024$273.09 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| W. L. Gore & Associates, Inc. | $68.93 | 3 |
What the 2025 payments were for
- Food and Beverage$68.93 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Surgery, Vascular Surgery providers in Lebanon
- 1639371610
- 1316059058
- 1669815130
- 1962412098
- 1225788300
- 1942688338
- 1508879024
- 1821193434
- 1265591333
- 1144337569
- 1336776483
- 1942316914