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NPISignal

Individual Healthcare Provider

John Kassotis, M.D.

NPI Record: ActiveInternal Medicine — Clinical Cardiac Electrophysiology
NPI1598759003
Riverhead, New York

Provider's NPPES record last updated: April 7, 2023

Overview

Entity Type
Individual Healthcare Provider
NPI
1598759003
Primary Specialty
Internal Medicine — Clinical Cardiac Electrophysiology
Practice Location
Riverhead, New York
Sole Proprietor
No

Federal Screening

NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.

List of Excluded Individuals/Entities (LEIE)

HHS Office of Inspector General

No potential match identified

No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.

Source data
September 10, 2026
Records indexed
84,001
Screened
Sep 21, 2026, 3:20 PM UTC

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

SAM.gov Exclusions

U.S. General Services Administration

Not checked

SAM.gov Exclusions was not checked.

SAM.gov screening is not configured on this deployment. No SAM check has been performed.

Screened
Not checked

This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.

This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.

Run a name-based screening

Searches OIG LEIE and SAM.gov by name and reviews every potential match.

Specialties & Taxonomies

  • Internal Medicine

    Clinical Cardiac Electrophysiology

    Allopathic & Osteopathic Physicians

    Primary

    A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

    Taxonomy code 207RC0001X
  • Internal Medicine

    Advanced Heart Failure and Transplant Cardiology

    Allopathic & Osteopathic Physicians

    Specialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery, cardiac transplantation, or mechanical circulatory support, to pre-and post-operative evaluation and management of patients with cardiac transplants and mechanical support devices, and end-of-life care for patients with end-stage heart failure.

    Taxonomy code 207RA0001X
  • Internal Medicine

    Cardiovascular Disease

    Allopathic & Osteopathic Physicians

    An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

    Taxonomy code 207RC0000X

Provider-Reported License Information

Internal Medicine (New York)
187961-01
Internal Medicine (New York)
187961-01
Internal Medicine (New York)
187961-1
Internal Medicine (New Jersey)
25MA07553100
License numbers are reported by the provider to NPPES and are not independently verified by NPISignal against any state licensing board. Confirm current license status directly with the issuing state board.

Practice Locations

Practice Location

951 Roanoke Ave

Riverhead, New York 11901-2724

Phone: (631) 369-5005

Additional Practice Location

450 Clarkson Ave

2nd Fl. Rm# A2-393

Brooklyn, New York 11203-2056

Phone: (718) 270-1081

Fax: (718) 270-2917

Record Information

Enumeration Date
September 12, 2005
Provider's NPPES Record Last Updated
April 7, 2023
Certification Date
April 7, 2023
NPISignal NPPES Dataset
August 2026

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