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Interventional Cardiology

Kareem Niazi

Works at hospitals in Manhasset, NY · Bay Shore, NY · New York

Summary

Kareem Niazi is an interventional cardiologist at 400 Potter Blvd, Brightwaters, NY 11718. Phone: (631) 591-7400. Accepts Medicare assignment. In 2024, Kareem Niazi had 263 Original Medicare patients and 641 services. NPI 1578980728. 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: Interventional cardiologist (Medicare lists Interventional Cardiology)
  • Address: 400 Potter Blvd, Brightwaters, NY 11718 · Directions
  • Phone: (631) 591‑7400
  • Medicare: Accepts Medicare assignment
  • Hospitals: North Shore University Hospital, Ns/Lij HS Southside Hospital
  • Group practice: North Shore-Lij Medical PC
  • Medical school: Ohio State University College Of Medicine · graduated 2014 (12 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Kareem Niazi, 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 Kareem Niazi accept Medicare assignment?
Yes. Medicare's clinician data says Kareem Niazi 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 Kareem Niazi see?
In 2024, CMS data shows 263 Original Medicare patients and 641 services for Kareem Niazi. This counts Original Medicare only and measures volume, not quality.
What is Kareem Niazi's NPI number?
1578980728. 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 Kareem Niazi, 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 patients263
Services billed to Medicare641
Different services or procedures58
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)91 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)87 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)55 services
  4. Ultrasound of both sides of head and neck blood flow (93880)48 services
  5. Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist (93458)47 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%
  • Ischemic heart disease61%
  • Diabetes46%
  • Arthritis44%
  • Heart failure39%

Hospitals where Kareem Niazi works

Medicare's Facility Affiliation Data lists Kareem Niazi 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.

  • North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106
  • Ns/Lij HS Southside HospitalBay Shore, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330043

Practice locations

Addresses where Kareem Niazi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Kareem Niazi as a member of this group (CMS data updated October 2, 2026).

  • North Shore-Lij Medical PC6,440 clinicians in the group

Specialties

Find other Interventional Cardiology doctors in New York →

Other interventional cardiologists in New York

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

All interventional cardiologists in New York →

Other clinicians in North Shore-Lij Medical PC

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

Clinician information

Medical schoolOhio State University College Of Medicine
Graduation year2014 (12 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1578980728
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