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Emergency Medicine

Matthew J. Stewart, MD

Works at hospitals in Tooele, UT · Salt Lake City, UT · Utah

Summary

Dr. Matthew J. Stewart, MD is an emergency medicine doctor at 2055 N Main St, Tooele, UT 84074. Phone: (435) 843-3600. Accepts Medicare assignment. In 2024, Matthew J. Stewart had 110 Original Medicare patients and 176 services. NPI 1538455498. 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: 2055 N Main St, Tooele, UT 84074 · Directions
  • Phone: (435) 843‑3600
  • Medicare: Accepts Medicare assignment
  • Hospitals: Mountain West Medical Center, St Mark's Hospital
  • Group practice: Emergency Physicians Integrated Care LLC
  • Medical school: University Of Utah School Of Medicine · graduated 2016 (10 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Matthew J. Stewart, 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 Matthew J. Stewart accept Medicare assignment?
Yes. Medicare's clinician data says Matthew J. Stewart 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 Matthew J. Stewart see?
In 2024, CMS data shows 110 Original Medicare patients and 176 services for Matthew J. Stewart. This counts Original Medicare only and measures volume, not quality.
What is Matthew J. Stewart's NPI number?
1538455498. 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 Matthew J. Stewart, 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 patients110
Services billed to Medicare176
Different services or procedures17
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)76 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)39 services
  3. Emergency department visit with moderate level of medical decision making (99284)24 services
  4. Critical care, first 30-74 minutes (99291)14 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 cholesterol66%
  • Arthritis47%
  • Diabetes43%
  • Depression38%
  • Anxiety35%

Hospitals where Matthew J. Stewart works

Medicare's Facility Affiliation Data lists Matthew J. Stewart 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 Matthew J. Stewart is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Emergency Physicians Integrated Care LLC201 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Utah →

Other emergency medicine doctors in Tooele

Clinicians with the same Medicare primary specialty in Tooele, UT — not a recommendation.

All emergency medicine doctors in Tooele →

Other clinicians in Emergency Physicians Integrated Care LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Utah School Of Medicine
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538455498
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