Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Pathology

Louis J. Vaickus, MD

Works at hospitals in Berlin, NH · Keene, NH · Woodsville, NH … · New Hampshire

Summary

Dr. Louis J. Vaickus, MD is a pathologist at 1 Medical Ctr Dr, Lebanon, NH 03756. Phone: (603) 650-5000. Accepts Medicare assignment. In 2024, Louis J. Vaickus had 411 Original Medicare patients and 1,259 services. NPI 1841551843. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Louis J. Vaickus, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Louis J. Vaickus accept Medicare assignment?
Yes. Medicare's clinician data says Louis J. Vaickus 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 Louis J. Vaickus see?
In 2024, CMS data shows 411 Original Medicare patients and 1,259 services for Louis J. Vaickus. This counts Original Medicare only and measures volume, not quality.
What is Louis J. Vaickus's NPI number?
1841551843. 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 Louis J. Vaickus, 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 patients411
Services billed to Medicare1,259
Different services or procedures15
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Special stained specimen slides to examine tissue, each additional procedure (88341)289 services
  2. Pathology examination of tissue using a microscope, intermediate complexity (88305)288 services
  3. Cell examination of specimen, selective cellular enhancement technique (88112)246 services
  4. Evaluation of fine needle aspirate with interpretation and report (88173)202 services
  5. Special stained specimen slides to examine tissue, initial procedure (88342)92 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 pressure70%
  • High cholesterol62%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)36%
  • Arthritis35%
  • Anxiety29%
  • Depression27%

Hospitals where Louis J. Vaickus works

Medicare's Facility Affiliation Data lists Louis J. Vaickus 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.

  • Androscoggin Valley HospitalBerlin, NH · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 301310
  • Cheshire Medical CenterKeene, NH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 300019
  • Cottage HospitalWoodsville, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301301
  • Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
  • Upper Connecticut Valley HospitalColebrook, NH · Critical Access Hospital · Emergency services: listed by Medicare · CCN 301300

Practice locations

Addresses where Louis J. Vaickus is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Louis J. Vaickus as a member of this group (CMS data updated October 2, 2026).

  • Dartmouth-Hitchcock Clinic1,472 clinicians in the group

Specialties

Find other Pathology doctors in New Hampshire →

Other pathologists in Lebanon

Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.

All pathologists in Lebanon →

Other clinicians in Dartmouth-Hitchcock Clinic

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolBoston University School Of Medicine
Graduation year2012 (14 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1841551843
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians