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Diagnostic Radiology

Karim J. Rebeiz, MD

Works at hospitals in Summit, NJ · New Jersey

Summary

Dr. Karim J. Rebeiz, MD is a radiologist at 1275 York Ave, New York, NY 10065. Phone: (212) 639-2000. Accepts Medicare assignment. In 2024, Karim J. Rebeiz had 587 Original Medicare patients and 1,264 services. NPI 1689051278. 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: Radiologist (Medicare lists Diagnostic Radiology)
  • Address: 1275 York Ave, New York, NY 10065 · Directions (2 more locations)
  • Phone: (212) 639‑2000
  • Medicare: Accepts Medicare assignment
  • Hospital: Overlook Medical Center
  • Group practice: Simonmed Imaging Florida LLC (+1 more)
  • Medical school: graduated 2010 (16 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Karim J. Rebeiz, 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 Karim J. Rebeiz accept Medicare assignment?
Yes. Medicare's clinician data says Karim J. Rebeiz 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 Karim J. Rebeiz see?
In 2024, CMS data shows 587 Original Medicare patients and 1,264 services for Karim J. Rebeiz. This counts Original Medicare only and measures volume, not quality.
What is Karim J. Rebeiz's NPI number?
1689051278. 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 Karim J. Rebeiz, 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 patients587
Services billed to Medicare1,264
Different services or procedures44
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Ct scan head or brain without contrast (70450)323 services
  2. Mri scan of brain before and after contrast (70553)172 services
  3. Mri scan of lower spinal canal before and after contrast (72158)119 services
  4. Mri scan of middle spinal canal before and after contrast (72157)109 services
  5. Mri scan of upper spinal canal before and after contrast (72156)104 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 pressure75%
  • High cholesterol75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)61%
  • Arthritis55%
  • Anxiety51%
  • Diabetes40%

Hospitals where Karim J. Rebeiz works

Medicare's Facility Affiliation Data lists Karim J. Rebeiz 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.

  • Overlook Medical CenterSummit, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310051

Practice locations

Addresses where Karim J. Rebeiz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Karim J. Rebeiz as a member of these groups (CMS data updated October 2, 2026).

  • Simonmed Imaging Florida LLC317 clinicians in the group
  • MSKCC Radiology Group193 clinicians in the group

Specialties

Find other Diagnostic Radiology doctors in New York →

Other radiologists in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

All radiologists in New York →

Other clinicians in Simonmed Imaging Florida LLC

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

Clinician information

CredentialMD
Graduation year2010 (16 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689051278
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