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Radiation Oncology

Garrett K. Harada, MD

Works at hospitals in Orange, CA · California

Summary

Garrett K. Harada, MD (Radiation Oncology) is listed by Medicare at 1 hospital in Orange, CA. NPI 1831726330. 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 Garrett K. Harada, 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

Radiation OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
7Years since medical school (graduated 2019)
University Of California, Geffen School Of MedicineMedical school
MaleGender (as listed)
UC Regents Department of Radiation OncologyGroup practice

Quick answers

Which hospitals does Garrett K. Harada work at?
Medicare's official clinician data lists Garrett K. Harada at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Garrett K. Harada see patients?
Medicare's clinician data lists 1 practice location in Orange, CA. Call before your visit to confirm the address.
What is Garrett K. Harada's specialty?
Medicare lists Radiation Oncology as the primary specialty.
Does Garrett K. Harada accept Medicare assignment?
Yes. Medicare's clinician data says Garrett K. Harada 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.
Does Garrett K. Harada offer telehealth?
Medicare's clinician data says Garrett K. Harada offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Garrett K. Harada?
(714) 456-5508, as listed in official Medicare / NPI Registry data.
What is Garrett K. Harada's NPI number?
1831726330. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Garrett K. Harada works

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

Group practices

Medicare enrollment lists Garrett K. Harada as a member of this group (CMS data updated 2026-10-02).

  • UC Regents Department of Radiation Oncology16 clinicians in the group

Specialties

Find other Radiation Oncology doctors in California →

Other radiation oncologists in Orange

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

All radiation oncologists in Orange →

Clinician information

CredentialMD
Medical schoolUniversity Of California, Geffen School Of Medicine
Graduation year2019
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1831726330
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