Quick answers
- Does Alexei Viazmenski accept Medicare assignment?
- Yes. Medicare's clinician data says Alexei Viazmenski accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Alexei Viazmenski see?
- In 2024, CMS data shows 1,972 Original Medicare patients and 2,771 services for Alexei Viazmenski. This counts Original Medicare only and measures volume, not quality.
- What is Alexei Viazmenski's NPI number?
- 1386730646. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Alexei Viazmenski, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,972 |
|---|---|
| Services billed to Medicare | 2,771 |
| Different services or procedures | 109 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Ct scan of abdomen and pelvis with contrast (74177)375 services
- Mri scan of pelvis before and after contrast (72197)331 services
- Screening 3d breast mammography (77063)247 services
- Screening mammography (77067)247 services
- X-ray of chest, 1 view (71045)211 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure65%
- High cholesterol61%
- Arthritis41%
- Anxiety27%
- Depression26%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)25%
Hospitals where Alexei Viazmenski works
Medicare's Facility Affiliation Data lists Alexei Viazmenski at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Alice Peck Day Memorial HospitalLebanon, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301305
- Cottage HospitalWoodsville, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301301
- Huggins HospitalWolfeboro, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301312
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
- Mt Ascutney HospitalWindsor, VT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 471302
Practice locations
Addresses where Alexei Viazmenski is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1 Medical Ctr DrLebanon, NH 03756 (603) 650‑5000
- 10 Alice Peck Day DrLebanon, NH 03766 (603) 448‑3121
- 103 Swiftwater RdWoodsville, NH 03785 (603) 747‑2900
- 289 County RdWindsor, VT 05089 (802) 674‑6711
- 590 Court StKeene, NH 03431 (603) 354‑5400
Group practices
Medicare enrollment lists Alexei Viazmenski as a member of these groups (CMS data updated October 2, 2026).
- Dartmouth-Hitchcock Clinic1,472 clinicians in the group
- Cottage Hospital30 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Lebanon
Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.
Other clinicians in Dartmouth-Hitchcock Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386730646 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians