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Emergency Medicine

Jonathan W. Graff, DO

Works at hospitals in Mesa, AZ · Arizona

Summary

Jonathan W. Graff, DO (Emergency Medicine) is listed by Medicare at 3 hospitals in Mesa, AZ. NPI 1184603557. 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 Jonathan W. Graff, 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

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
29Years since medical school (graduated 1997)
MaleGender (as listed)
Tec Emergency Physicians of Arizona, LLCGroup practice (+2 more)

Quick answers

Which hospitals does Jonathan W. Graff work at?
Medicare's official clinician data lists Jonathan W. Graff at 3 hospitals: Banner Baywood Medical Center, Banner Heart Hospital and Dignity Health Arizona General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Jonathan W. Graff see patients?
Medicare's clinician data lists 4 practice locations, including Casa Grande, AZ, Mesa, AZ and Laveen, AZ. Call before your visit to confirm the address.
What is Jonathan W. Graff's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Jonathan W. Graff accept Medicare assignment?
Yes. Medicare's clinician data says Jonathan W. Graff 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 Jonathan W. Graff?
(520) 381-6300, as listed in official Medicare / NPI Registry data.
What is Jonathan W. Graff's NPI number?
1184603557. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Jonathan W. Graff works

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

Group practices

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

  • Tec Emergency Physicians of Arizona, LLC153 clinicians in the group
  • Emergency Physicians Southwest PC98 clinicians in the group
  • Quantum Healthcare Medical Associates of Arizona PC38 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Arizona →

Other emergency medicine doctors in Casa Grande

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

All emergency medicine doctors in Casa Grande →

Clinician information

CredentialDO
Graduation year1997
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1184603557
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