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Diagnostic Radiology

Dawn C. Nwamuo, MD

Works at hospitals in Fremont, CA · San Leandro, CA · California

Summary

Dr. Dawn C. Nwamuo, MD is a radiologist at 2500 Merced St, San Leandro, CA 94577. Phone: (510) 454-1000. Accepts Medicare assignment. In 2024, Dawn C. Nwamuo had 151 Original Medicare patients and 220 services. NPI 1134309818. 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 Dawn C. Nwamuo, 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 Dawn C. Nwamuo accept Medicare assignment?
Yes. Medicare's clinician data says Dawn C. Nwamuo 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 Dawn C. Nwamuo see?
In 2024, CMS data shows 151 Original Medicare patients and 220 services for Dawn C. Nwamuo. This counts Original Medicare only and measures volume, not quality.
What is Dawn C. Nwamuo's NPI number?
1134309818. 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 Dawn C. Nwamuo, 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 patients151
Services billed to Medicare220
Different services or procedures39
Participating Medicare providerYes
Average age of these patients66

Most frequent services

  1. X-ray of chest, 1 view (71045)33 services
  2. Ct scan head or brain without contrast (70450)22 services
  3. Screening mammography (77067)20 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 pressure68%
  • High cholesterol48%
  • Arthritis42%
  • Diabetes40%
  • Chronic kidney disease33%
  • Depression31%

Hospitals where Dawn C. Nwamuo works

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

Group practices

Medicare enrollment lists Dawn C. Nwamuo as a member of this group (CMS data updated October 2, 2026).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in California →

Other radiologists in San Leandro

Clinicians with the same Medicare primary specialty in San Leandro, CA — not a recommendation.

All radiologists in San Leandro →

Other clinicians in Permanente Medical Group Inc

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, Geffen School Of Medicine
Graduation year2004 (22 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1134309818
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