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Diagnostic Radiology

Alex W. Sun, MD

Works at hospitals in El Centro, CA · La Mesa, CA · Sacramento, CA … · California

Summary

Alex W. Sun, MD (Diagnostic Radiology) is listed by Medicare at 5 hospitals in El Centro, CA, La Mesa, CA and Sacramento, CA and other places. NPI 1538502331. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Alex W. Sun, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Diagnostic RadiologyPrimary specialty
YesAccepts Medicare assignment
13Years since medical school (graduated 2013)
Tufts University School Of MedicineMedical school
MaleGender (as listed)
Permanente Medical Group IncGroup practice (+5 more)

Quick answers

Which hospitals does Alex W. Sun work at?
Medicare's official clinician data lists Alex W. Sun at 5 hospitals: El Centro Regional Medical Center, Grossmont Hospital, Kaiser Foundation Hospital So Sacramento, Sharp Memorial Hospital and UC San Diego Health Hillcrest - Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Alex W. Sun see patients?
Medicare's clinician data lists 18 practice locations, including Encinitas, CA, El Centro, CA and San Diego, CA. Call before your visit to confirm the address.
What is Alex W. Sun's specialty?
Medicare lists Diagnostic Radiology as the primary specialty.
Does Alex W. Sun accept Medicare assignment?
Yes. Medicare's clinician data says Alex W. Sun accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Alex W. Sun?
(800) 926-8273, as listed in official Medicare / NPI Registry data.
What is Alex W. Sun's NPI number?
1538502331. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Alex W. Sun works

Medicare's Facility Affiliation Data lists Alex W. Sun at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Alex W. Sun is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 18; the Medicare profile lists all.

Group practices

Medicare enrollment lists Alex W. Sun as a member of these groups (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group
  • Regents of the University of California2,089 clinicians in the group
  • Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
  • Beverly Radiology Medical Group III328 clinicians in the group
  • Desert Advanced Imaging Medical Center208 clinicians in the group
  • Fresno Imaging Center133 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in California →

Other radiologists in Encinitas

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

All radiologists in Encinitas →

Clinician information

CredentialMD
Medical schoolTufts University School Of Medicine
Graduation year2013
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538502331
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians