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Emergency Medicine

Alison R. Marciniak, MD

Works at hospitals in Woodruff, WI · Wisconsin

Summary

Dr. Alison R. Marciniak, MD is an emergency medicine doctor at 240 Maple St, Woodruff, WI 54568. Phone: (715) 356-8000. Accepts Medicare assignment. In 2024, Alison R. Marciniak had 55 Original Medicare patients and 58 services. NPI 1033520473. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 240 Maple St, Woodruff, WI 54568 · Directions
  • Phone: (715) 356‑8000
  • Medicare: Accepts Medicare assignment
  • Hospital: Howard Young Medical Center
  • Group practice: Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc. (+1 more)
  • Medical school: Medical College Of Wisconsin · graduated 2014 (12 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Alison R. Marciniak, 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 Alison R. Marciniak accept Medicare assignment?
Yes. Medicare's clinician data says Alison R. Marciniak 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 Alison R. Marciniak see?
In 2024, CMS data shows 55 Original Medicare patients and 58 services for Alison R. Marciniak. This counts Original Medicare only and measures volume, not quality.
What is Alison R. Marciniak's NPI number?
1033520473. 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 Alison R. Marciniak, 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 patients55
Services billed to Medicare58
Different services or procedures8
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Emergency department visit with moderate level of medical decision making (99284)22 services
  2. Emergency department visit with high level of medical decision making (99285)17 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 cholesterol75%
  • High blood pressure73%
  • Arthritis44%
  • Diabetes40%
  • Ischemic heart disease38%
  • Chronic kidney disease31%

Hospitals where Alison R. Marciniak works

Medicare's Facility Affiliation Data lists Alison R. Marciniak 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.

  • Howard Young Medical CenterWoodruff, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520091

Practice locations

Addresses where Alison R. Marciniak is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alison R. Marciniak as a member of these groups (CMS data updated October 2, 2026).

  • Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.574 clinicians in the group
  • Howard Young Medical Center Inc of Woodruff Wisconsin56 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Wisconsin →

Other emergency medicine doctors in Wisconsin

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

All emergency medicine doctors in Wisconsin →

Other clinicians in Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.

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

Clinician information

CredentialMD
Medical schoolMedical College Of Wisconsin
Graduation year2014 (12 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1033520473
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