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Emergency Medicine

Rebecca Gust, DO

Works at hospitals in Marshfield, WI · Minocqua, WI · Wisconsin

Summary

Dr. Rebecca Gust, DO is an emergency medicine doctor at 1000 N Oak Ave, Marshfield, WI 54449. Phone: (715) 387-5511. Accepts Medicare assignment. In 2024, Rebecca Gust had 357 Original Medicare patients and 440 services. NPI 1619531225. 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 Rebecca Gust, 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 Rebecca Gust accept Medicare assignment?
Yes. Medicare's clinician data says Rebecca Gust 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 Rebecca Gust see?
In 2024, CMS data shows 357 Original Medicare patients and 440 services for Rebecca Gust. This counts Original Medicare only and measures volume, not quality.
What is Rebecca Gust's NPI number?
1619531225. 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 Rebecca Gust, 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 patients357
Services billed to Medicare440
Different services or procedures27
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with moderate level of medical decision making (99284)152 services
  2. Emergency department visit with high level of medical decision making (99285)125 services
  3. Emergency department visit with low level of medical decision making (99283)81 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)24 services
  5. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)11 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 pressure75%
  • High cholesterol73%
  • Arthritis45%
  • Ischemic heart disease42%
  • Chronic kidney disease38%
  • Atrial fibrillation35%

Hospitals where Rebecca Gust works

Medicare's Facility Affiliation Data lists Rebecca Gust 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.

Practice locations

Addresses where Rebecca Gust is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Rebecca Gust as a member of this group (CMS data updated October 2, 2026).

  • MCHS Hospitals Inc1,197 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Wisconsin →

Other emergency medicine doctors in Marshfield

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

All emergency medicine doctors in Marshfield →

Other clinicians in MCHS Hospitals Inc

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

Clinician information

CredentialDO
Graduation year2019 (7 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1619531225
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