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Internal Medicine

Michael Castro, MD

Works at hospitals in Sun City West, AZ · Arizona

Summary

Michael Castro, MD (Internal Medicine) is listed by Medicare at 1 hospital in Sun City West, AZ. NPI 1639170293. 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 Michael Castro, 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
University Of Puerto Rico School Of MedicineMedical school
MaleGender (as listed)
Banner Hospital Based Physicians Arizona LLCGroup practice (+2 more)

Quick answers

Which hospitals does Michael Castro work at?
Medicare's official clinician data lists Michael Castro at 1 hospital: Banner del E. Webb Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Michael Castro see patients?
Medicare's clinician data lists 4 practice locations, including Phoenix, AZ, Surprise, AZ and Sun City, AZ. Call before your visit to confirm the address.
What is Michael Castro's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Michael Castro accept Medicare assignment?
Yes. Medicare's clinician data says Michael Castro 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 Michael Castro?
(602) 839-2000, as listed in official Medicare / NPI Registry data.
What is Michael Castro's NPI number?
1639170293. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Michael Castro works

Medicare's Facility Affiliation Data lists Michael Castro 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 Michael Castro is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Michael Castro as a member of these groups (CMS data updated 2026-10-02).

  • Banner Hospital Based Physicians Arizona LLC637 clinicians in the group
  • BHSM Rehabilitation LLC456 clinicians in the group
  • Banner Primary Care Physicians Arizona LLC239 clinicians in the group

Specialties

Find other Internal Medicine doctors in Arizona →

Other internal medicine doctors in Phoenix

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

All internal medicine doctors in Phoenix →

Clinician information

CredentialMD
Medical schoolUniversity Of Puerto Rico School Of Medicine
Graduation year1994
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639170293
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