GABRIEL KARKENNY
NPI 1407352529
Internal Medicine - Infectious Disease in Clifton, NJ

Q: What is Gabriel Karkenny's NPI number?

The NPI number for Gabriel Karkenny is 1407352529. It was assigned to this individual provider in the NPPES registry on April 5, 2018.

Q: What is Gabriel Karkenny's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Gabriel Karkenny was last updated on September 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 05, 2018PECOS Enrolled

94.95/100

CMS Quality Rating

975 CLIFTON AVE, CLIFTON, NJ 07013(973) 778-8666(973) 778-7559 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 5, 2024, Apr 10, 2024 (2 updates tracked since 2024).

On this page

About Gabriel Karkenny NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GABRIEL KARKENNY (NPI 1407352529) is an individual infectious disease provider in Clifton, New Jersey, licensed in New Jersey (25MA11818600) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with St Mary's General Hospital, and is a graduate of State University Of New York Downstate Medical Center (2015).

NPPES Registry Identity

NPI1407352529

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameGABRIEL KARKENNY

Location Address975 CLIFTON AVEClifton, NJ 07013-2722

Mailing Address975 Clifton AveClifton, NJ 07013-2722 · (973) 778-8666 · Fax (973) 778-7559

Phone(973) 778-8666

Fax(973) 778-7559

Sole ProprietorNo

Medical School CMSState University Of New York Downstate Medical CenterGraduated 2015

Enumeration DateApril 5, 2018

Last NPPES UpdateSeptember 29, 20252 updates tracked since enumeration

NPPES CertifiedSeptember 29, 2025

✔ NPI 1407352529 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in NJ · 25MA11818600

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

975 CLIFTON AVE, Clifton, NJ 07013

Open in Google Maps ↗

Other Identifiers 1

Medicaid0924130NJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gabriel Karkenny is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4981949393

PECOS Enrollment IDI20230721001446

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Gabriel Karkenny reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alpha Medical And Wellness LLC

2.5 mi

Internal Medicine

10 JACOBUS AVE
Little Falls, NJ 07424

Reassigned Medicare billing, New Jersey enrollment
2 clinicians in this Medicare group

NPI 1295510287 (602) 687-0312

Medical Associates Of Englewood, PC

11 mi

Internal Medicine

350 ENGLE ST
Englewood, NJ 07631

Reassigned Medicare billing, New Jersey enrollment
849 clinicians in this Medicare group

NPI 1952681918 (201) 608-2136

The Radiology Group Of New Jersey, LLC

34 mi

Multi-Specialty

651 WILLOW GROVE ST
Hackettstown, NJ 07840

Reassigned Medicare billing, New Jersey enrollment
429 clinicians in this Medicare group

NPI 1174010540 (908) 979-1621

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

625 services256 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

175 services166 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

115 services67 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

69 services51 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

50 services50 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

19 services19 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Mary's General Hospital

Acute Care Hospitals · Passaic, NJ

3/5 CMS rating

OwnershipProprietary

CMS Certification Number310006

Location350 BoulevardPassaic, NJ 07055 · Passaic County

Emergency services Birthing friendly

St Joseph's University Medical Center Inc

Acute Care Hospitals · Paterson, NJ

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number310019

Location703 Main StPaterson, NJ 07503 · Passaic County

Birthing friendly

Saint Clare's Hospital/ Denville Campus

Acute Care Hospitals · Denville, NJ

3/5 CMS rating

OwnershipProprietary

CMS Certification Number310050

Location25 Pocono RoadDenville, NJ 07834 · Morris County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07013 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$144.86 typical visit price

range $63.84 – $190.92

Typical copayment $36.21 (range $15.96 – $47.73)

Most-billed visit code 99204

Established Patient

$111.57 typical visit price

range $20.97 – $155.92

Typical copayment $27.89 (range $5.24 – $38.98)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.95/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

87.26

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PARTHIV V RAVAL,MD LLC

Internal Medicine (Gastroenterology)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 614-9700

DR. SESSINE NAJJAR M.D.

Internal Medicine (Infectious Disease)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 778-8666

JOE ELIAS NAJJAR MD

Internal Medicine (Infectious Disease)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 778-8666

LEORI C. QUINTOS PHYSICAL THERAPIST

Specialist

975 CLIFTON AVE, SUITE 2
CLIFTON, NJ 07013

Passaic County (973) 773-9990

SABAH VAROQUA M.D.

Internal Medicine (Infectious Disease)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 778-8666

SESSINE NAJJAR MD LLC

Internal Medicine (Infectious Disease)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 778-8666

DR. OM P GANDHI M.D.

Orthopaedic Surgery

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 471-9116

DR. SUSHMA GANDHI M.D.

Pediatrics (Adolescent Medicine)

975 CLIFTON AVE
CLIFTON, NJ 07013

Passaic County (973) 471-5908

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gabriel Karkenny's NPI number?

The NPI number for Gabriel Karkenny is 1407352529. It was assigned to this individual provider in the NPPES registry on April 5, 2018.

Where is Gabriel Karkenny located?

Gabriel Karkenny practices at 975 Clifton Ave, Clifton, NJ 07013. The listed phone number is (973) 778-8666.

What is Gabriel Karkenny's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Gabriel Karkenny enrolled in Medicare?

Yes. Gabriel Karkenny is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gabriel Karkenny's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gabriel Karkenny reassigns Medicare benefits to 3 organizations: Alpha Medical And Wellness LLC (Little Falls, NJ), Medical Associates Of Englewood, PC (Englewood, NJ) and The Radiology Group Of New Jersey, LLC (Hackettstown, NJ). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gabriel Karkenny's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gabriel Karkenny accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Gabriel Karkenny as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Gabriel Karkenny affiliated with any hospitals?

According to CMS data, Gabriel Karkenny is affiliated with St Mary's General Hospital, St Joseph's University Medical Center Inc and Saint Clare's Hospital/ Denville Campus.

When was this NPI record last updated?

The NPPES record for Gabriel Karkenny was last updated on September 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.