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Gastroenterology

Justin Horwitz, DO

Works at hospitals in Mesa, AZ · Gilbert, AZ · Arizona

Summary

Justin Horwitz, DO (Gastroenterology) is listed by Medicare at 3 hospitals in Mesa, AZ and Gilbert, AZ. NPI 1528201670. 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 Justin Horwitz, 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

GastroenterologyPrimary specialty
YesAccepts Medicare assignment
17Years since medical school (graduated 2009)
Lake Erie College Of Osteopathic Medicine, ErieMedical school
MaleGender (as listed)
Banner Physician Specialists Arizona LLCGroup practice

Quick answers

Which hospitals does Justin Horwitz work at?
Medicare's official clinician data lists Justin Horwitz at 3 hospitals: Banner Baywood Medical Center, Banner Desert Medical Center and Banner Gateway Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Justin Horwitz see patients?
Medicare's clinician data lists 1 practice location in Chandler, AZ. Call before your visit to confirm the address.
What is Justin Horwitz's specialty?
Medicare lists Gastroenterology as the primary specialty.
Does Justin Horwitz accept Medicare assignment?
Yes. Medicare's clinician data says Justin Horwitz 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 Justin Horwitz?
(480) 668-1600, as listed in official Medicare / NPI Registry data.
What is Justin Horwitz's NPI number?
1528201670. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Justin Horwitz works

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

Group practices

Medicare enrollment lists Justin Horwitz as a member of this group (CMS data updated 2026-10-02).

  • Banner Physician Specialists Arizona LLC373 clinicians in the group

Specialties

Find other Gastroenterology doctors in Arizona →

Other gastroenterologists in Chandler

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

All gastroenterologists in Chandler →

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2009
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528201670
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