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Emergency Medicine

Harry Nazario Diaz

Works at hospitals in Hanford, CA · Springfield, MA · California, Massachusetts

Summary

Harry Nazario Diaz is an emergency medicine doctor at 115 Mall Dr, Hanford, CA 93230. Phone: (559) 582-9000. Accepts Medicare assignment. NPI 1396310678. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 115 Mall Dr, Hanford, CA 93230 · Directions
  • Phone: (559) 582‑9000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Adventist Health Hanford, Mercy Medical Center
  • Group practice: Cep America - California
  • Medical school: University Of Puerto Rico School Of Medicine · graduated 2019 (7 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Harry Nazario Diaz, 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 Harry Nazario Diaz accept Medicare assignment?
Yes. Medicare's clinician data says Harry Nazario Diaz 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.
What is Harry Nazario Diaz's NPI number?
1396310678. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Harry Nazario Diaz works

Medicare's Facility Affiliation Data lists Harry Nazario Diaz 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.

  • Adventist Health HanfordHanford, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050121
  • Mercy Medical CenterSpringfield, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220066

Practice locations

Addresses where Harry Nazario Diaz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Harry Nazario Diaz as a member of this group (CMS data updated October 2, 2026).

  • Cep America - California1,292 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Hanford

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

All emergency medicine doctors in Hanford →

Other clinicians in Cep America - California

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

Clinician information

Medical schoolUniversity Of Puerto Rico School Of Medicine
Graduation year2019 (7 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1396310678
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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians