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Radiation Oncology

Alexei L. Polishchuk, MD

Works at hospitals in Anacortes, WA · Bellingham, WA · Mount Vernon, WA · Washington

Summary

Dr. Alexei L. Polishchuk, MD is a radiation oncologist at 307 S 13th St, Suite 100, Mount Vernon, WA 98274. Phone: (360) 428-2146. Accepts Medicare assignment. In 2024, Alexei L. Polishchuk had 99 Original Medicare patients and 1,975 services. NPI 1295021921. 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.

  • Specialty: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 307 S 13th St, Suite 100, Mount Vernon, WA 98274 · Directions (1 more location)
  • Phone: (360) 428‑2146
  • Medicare: Accepts Medicare assignment
  • Hospitals: Island Hospital, PeaceHealth St Joseph Medical Center, Skagit Valley Hospital
  • Group practice: Whiton and Register PLLC (+1 more)
  • Medical school: Perelman School Of Med At The University Of Pennsylvania · graduated 2011 (15 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Alexei L. Polishchuk, 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 Alexei L. Polishchuk accept Medicare assignment?
Yes. Medicare's clinician data says Alexei L. Polishchuk 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 L. Polishchuk see?
In 2024, CMS data shows 99 Original Medicare patients and 1,975 services for Alexei L. Polishchuk. This counts Original Medicare only and measures volume, not quality.
What is Alexei L. Polishchuk's NPI number?
1295021921. 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 L. Polishchuk, 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 patients99
Services billed to Medicare1,975
Different services or procedures31
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Ct guidance for insertion of radiation therapy fields (77014)538 services
  2. Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)536 services
  3. Continuing radiation therapy consultation per week (77336)125 services
  4. Radiation treatment management, 5 treatment sessions (77427)115 services
  5. Calculation of radiation therapy dose (77300)107 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).

  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • High blood pressure69%
  • High cholesterol68%
  • Ischemic heart disease37%
  • Arthritis36%
  • Atrial fibrillation20%

Hospitals where Alexei L. Polishchuk works

Medicare's Facility Affiliation Data lists Alexei L. Polishchuk 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.

  • Island HospitalAnacortes, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 500007
  • PeaceHealth St Joseph Medical CenterBellingham, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500030
  • Skagit Valley HospitalMount Vernon, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500003

Practice locations

Addresses where Alexei L. Polishchuk is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alexei L. Polishchuk as a member of these groups (CMS data updated October 2, 2026).

  • Whiton and Register PLLC4 clinicians in the group
  • Bellingham Radiation Oncology PLLC3 clinicians in the group

Specialties

Find other Radiation Oncology doctors in Washington →

Other radiation oncologists in Washington

Clinicians with the same Medicare primary specialty in Washington — not a recommendation.

All radiation oncologists in Washington →

Other clinicians in Whiton and Register PLLC

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

Clinician information

CredentialMD
Medical schoolPerelman School Of Med At The University Of Pennsylvania
Graduation year2011 (15 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1295021921
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