Nikolaos Zacharias, M.D.
NPI 1023251717 · Vascular Surgery Physician · Lebanon, NH
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nikolaos Zacharias, M.D. is a Vascular Surgery Physician provider in Lebanon, NH (NPI 1023251717).
Provider details
- NPI number
- 1023251717
- Entity type
- Individual
- Primary specialty
- Vascular Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 17544 (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
17 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
1,223 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 231 | $129 |
| Complete Ultrasound Study of Arm and Leg Arteries93923 | 210 | $22 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 123 | $38 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 108 | $33 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 87 | $21 |
| Ultrasound of One Leg Arteries Or Artery Grafts93926 | 64 | $23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$273 across 2 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)
- 10 Members Way Ste 301Dover, NH 03820-5933Phone: (603) 609-6685
Registry dates
- Enumerated
- 2009-04-12
- Last updated
- 2026-01-27
- Certified
- 2026-01-27
Frequently asked questions
- What is Nikolaos Zacharias's NPI number?
- Nikolaos Zacharias's National Provider Identifier (NPI) is 1023251717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nikolaos Zacharias's specialty?
- Nikolaos Zacharias is listed in the NPPES registry with a primary specialty of Vascular Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Nikolaos Zacharias located?
- Nikolaos Zacharias's practice location on file with NPPES is 1 Medical Center Dr, Lebanon, NH 03756-1000.
- What is Nikolaos Zacharias's phone number?
- The practice phone number listed in the NPPES registry for Nikolaos Zacharias is (603) 650-8677.
- Does Nikolaos Zacharias accept Medicare?
- Nikolaos Zacharias is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nikolaos Zacharias's NPI active?
- Yes — Nikolaos Zacharias's NPI (1023251717) is active in the NPPES registry as of the last update on 2026-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.