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Diagnostic Radiology

Remy Ngwanyam, MD

Works at hospitals in Ventura, CA · Ft. Defiance, AZ · Hattiesburg, MS … · California, Arizona, Mississippi

Summary

Dr. Remy Ngwanyam, MD is a radiologist at 12033 Agency Rd, Parker, AZ 85344. Phone: (928) 669-2137. Accepts Medicare assignment. In 2024, Remy Ngwanyam had 475 Original Medicare patients and 646 services. NPI 1821445909. 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 Remy Ngwanyam, 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 Remy Ngwanyam accept Medicare assignment?
Yes. Medicare's clinician data says Remy Ngwanyam 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 Remy Ngwanyam see?
In 2024, CMS data shows 475 Original Medicare patients and 646 services for Remy Ngwanyam. This counts Original Medicare only and measures volume, not quality.
What is Remy Ngwanyam's NPI number?
1821445909. 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 Remy Ngwanyam, 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 patients475
Services billed to Medicare646
Different services or procedures69
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. X-ray of chest, 1 view (71045)191 services
  2. Ct scan of abdomen and pelvis with contrast (74177)72 services
  3. Ct scan head or brain without contrast (70450)58 services
  4. Ct scan of abdomen and pelvis without contrast (74176)31 services
  5. X-ray of chest, 2 views (71046)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 cholesterol75%
  • Arthritis55%
  • Diabetes48%
  • Chronic kidney disease38%
  • Ischemic heart disease36%

Hospitals where Remy Ngwanyam works

Medicare's Facility Affiliation Data lists Remy Ngwanyam 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 Remy Ngwanyam is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 18; the Medicare profile lists all.

Group practices

Medicare enrollment lists Remy Ngwanyam as a member of these groups (CMS data updated October 2, 2026).

  • Gila River Health Care Corporation247 clinicians in the group
  • Dhew Ind Hlth SV Hlth SVS and MNTL Hlth Adm227 clinicians in the group
  • Medical Foundation Inc212 clinicians in the group
  • DHHS, PHS, Naihs, Gallup Indian Medical Center186 clinicians in the group
  • DHHS PHS Naihs Chinle Comprehensive Health Care Facility152 clinicians in the group
  • The Fort Defiance Indian Hospital Board, Incorporation151 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in Arizona →

Other radiologists in Parker

Clinicians with the same Medicare primary specialty in Parker, AZ — not a recommendation.

All radiologists in Parker →

Other clinicians in Gila River Health Care Corporation

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

Clinician information

CredentialMD
Medical schoolBoston University 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)1821445909
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