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Emergency Medicine

Isaac Hayward, MD

Works at hospitals in Sheridan, WY · Wyoming

Summary

Dr. Isaac Hayward, MD is an emergency medicine doctor at 1401 W 5th St, Sheridan, WY 82801. Phone: (307) 672-1000. Accepts Medicare assignment. In 2024, Isaac Hayward had 462 Original Medicare patients and 550 services. NPI 1518426717. 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: 1401 W 5th St, Sheridan, WY 82801 · Directions
  • Phone: (307) 672‑1000
  • Medicare: Accepts Medicare assignment
  • Hospital: Sheridan Memorial Hospital
  • Group practice: Memorial Hospital of Sheridan County
  • Medical school: University Of Washington School Of Medicine · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Isaac Hayward, 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 Isaac Hayward accept Medicare assignment?
Yes. Medicare's clinician data says Isaac Hayward 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 Isaac Hayward see?
In 2024, CMS data shows 462 Original Medicare patients and 550 services for Isaac Hayward. This counts Original Medicare only and measures volume, not quality.
What is Isaac Hayward's NPI number?
1518426717. 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 Isaac Hayward, 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 patients462
Services billed to Medicare550
Different services or procedures26
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with moderate level of medical decision making (99284)248 services
  2. Emergency department visit with low level of medical decision making (99283)154 services
  3. Emergency department visit with high level of medical decision making (99285)91 services
  4. Emergency department visit with straightforward medical decision making (99282)23 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 pressure71%
  • High cholesterol52%
  • Arthritis35%
  • Diabetes28%
  • Atrial fibrillation27%
  • Ischemic heart disease26%

Hospitals where Isaac Hayward works

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

Group practices

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

  • Memorial Hospital of Sheridan County91 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Wyoming →

Other emergency medicine doctors in Sheridan

Clinicians with the same Medicare primary specialty in Sheridan, WY — not a recommendation.

All emergency medicine doctors in Sheridan →

Other clinicians in Memorial Hospital of Sheridan County

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

Clinician information

CredentialMD
Medical schoolUniversity Of Washington School Of Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1518426717
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