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

Anesthesiology

Heather L. Kuduk, MD

Sees patients in Marshfield, WI · Neenah, WI · Green Bay, WI · Wisconsin

Summary

Dr. Heather L. Kuduk, MD is an anesthesiologist at 1000 N Oak Ave, Marshfield, WI 54449. Phone: (715) 387-5511. Accepts Medicare assignment. In 2024, Heather L. Kuduk had 186 Original Medicare patients and 225 services. NPI 1649582727. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 1000 N Oak Ave, Marshfield, WI 54449 · Directions (2 more locations)
  • Phone: (715) 387‑5511
  • Medicare: Accepts Medicare assignment
  • Group practice: MCHS Hospitals Inc (+1 more)
  • Medical school: Southern Illinois University School Of Medicine · graduated 2010 (16 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Heather L. Kuduk, 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 Heather L. Kuduk accept Medicare assignment?
Yes. Medicare's clinician data says Heather L. Kuduk 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 Heather L. Kuduk see?
In 2024, CMS data shows 186 Original Medicare patients and 225 services for Heather L. Kuduk. This counts Original Medicare only and measures volume, not quality.
What is Heather L. Kuduk's NPI number?
1649582727. 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 Heather L. Kuduk, 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 patients186
Services billed to Medicare225
Different services or procedures34
Participating Medicare providerYes
Average age of these patients72

Most frequent services

  1. Anesthesia for lens surgery (00142)46 services
  2. Anesthesia for procedure for total knee joint replacement (01402)32 services
  3. Anesthesia for total hip replacement (01214)19 services
  4. Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)17 services
  5. Anesthesia for other procedure or exam of knee joint using an endoscope (01400)16 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 cholesterol73%
  • Arthritis67%
  • High blood pressure62%
  • Anxiety23%
  • Diabetes20%
  • Depression20%

Practice locations

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

Group practices

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

  • MCHS Hospitals Inc1,197 clinicians in the group
  • Osms Anesthesia LLC21 clinicians in the group

Specialties

Find other Anesthesiology doctors in Wisconsin →

Other anesthesiologists in Marshfield

Clinicians with the same Medicare primary specialty in Marshfield, WI — not a recommendation.

All anesthesiologists in Marshfield →

Other clinicians in MCHS Hospitals Inc

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

Clinician information

CredentialMD
Medical schoolSouthern Illinois University School Of Medicine
Graduation year2010 (16 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649582727
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians