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Emergency Medicine

Masayuki Iyanaga, MD

Works at hospitals in Richmond, TX · El Paso, TX · Texas

Summary

Dr. Masayuki Iyanaga, MD is an emergency medicine doctor at 4815 Alameda Ave, El Paso, TX 79905. Phone: (915) 215-6000. Accepts Medicare assignment. In 2024, Masayuki Iyanaga had 91 Original Medicare patients and 105 services. NPI 1275766693. 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 Masayuki Iyanaga, 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 Masayuki Iyanaga accept Medicare assignment?
Yes. Medicare's clinician data says Masayuki Iyanaga 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 Masayuki Iyanaga see?
In 2024, CMS data shows 91 Original Medicare patients and 105 services for Masayuki Iyanaga. This counts Original Medicare only and measures volume, not quality.
What is Masayuki Iyanaga's NPI number?
1275766693. 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 Masayuki Iyanaga, 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 patients91
Services billed to Medicare105
Different services or procedures14
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)55 services
  2. Emergency department visit with moderate level of medical decision making (99284)29 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 cholesterol57%
  • Diabetes54%
  • Chronic kidney disease35%
  • Depression34%
  • Arthritis33%

Hospitals where Masayuki Iyanaga works

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

Group practices

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

  • Texas Tech University Health Sciences Center El Paso304 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Texas →

Other emergency medicine doctors in El Paso

Clinicians with the same Medicare primary specialty in El Paso, TX — not a recommendation.

All emergency medicine doctors in El Paso →

Other clinicians in Texas Tech University Health Sciences Center El Paso

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1275766693
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