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Nuclear Medicine

Hossein Mehdikhani Karimabad, MD

Works at hospitals in Orange, CA · California

Summary

Dr. Hossein Mehdikhani Karimabad, MD is a nuclear medicine doctor at 1000 Fivepoint, Irvine, CA 92618. Phone: (949) 671-4673. Accepts Medicare assignment. In 2024, Hossein Mehdikhani Karimabad had 389 Original Medicare patients and 557 services. NPI 1083026041. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Nuclear medicine doctor (Medicare lists Nuclear Medicine)
  • Address: 1000 Fivepoint, Irvine, CA 92618 · Directions
  • Phone: (949) 671‑4673
  • Medicare: Accepts Medicare assignment
  • Hospital: UCI Health-Orange
  • Group practice: City of Hope Medical Foundation
  • Medical school: graduated 2005 (21 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Hossein Mehdikhani Karimabad, 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 Hossein Mehdikhani Karimabad accept Medicare assignment?
Yes. Medicare's clinician data says Hossein Mehdikhani Karimabad 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.
How many Medicare patients does Hossein Mehdikhani Karimabad see?
In 2024, CMS data shows 389 Original Medicare patients and 557 services for Hossein Mehdikhani Karimabad. This counts Original Medicare only and measures volume, not quality.
What is Hossein Mehdikhani Karimabad's NPI number?
1083026041. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Hossein Mehdikhani Karimabad, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients389
Services billed to Medicare557
Different services or procedures45
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Nuclear medicine study from skull base to mid-thigh with ct scan (78815)125 services
  2. Ct scan of abdomen and pelvis with contrast (74177)93 services
  3. Ct scan of chest with contrast (71260)91 services
  4. Nuclear medicine study whole body with ct scan (78816)24 services
  5. X-ray of abdomen, 1 view (74018)23 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure71%
  • High cholesterol60%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)42%
  • Arthritis38%
  • Diabetes37%
  • Chronic kidney disease29%

Hospitals where Hossein Mehdikhani Karimabad works

Medicare's Facility Affiliation Data lists Hossein Mehdikhani Karimabad 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.

  • UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Hossein Mehdikhani Karimabad is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Hossein Mehdikhani Karimabad as a member of this group (CMS data updated October 2, 2026).

  • City of Hope Medical Foundation982 clinicians in the group

Specialties

Find other Nuclear Medicine doctors in California →

Other nuclear medicine doctors in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All nuclear medicine doctors in California →

Other clinicians in City of Hope Medical Foundation

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

Clinician information

CredentialMD
Graduation year2005 (21 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1083026041
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians