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Howard M. Karp, DO

NPI 1619986841ActiveIndividual· Internal Medicine, Nephrology· Northfield, NJ

Internal Medicine, Nephrology (DO) with Shore Memorial Physicians Group PC, practicing in Northfield, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $239,473 for 2,992 claims, against $57,816 paid for services in 2024. Amgen Inc. was the largest of 10 companies reporting payments in 2025, $797.17 in all, mostly food and beverage. Lists Shore Medical Center as a hospital affiliation.

Overview

NPI1619986841
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorNo
NPI issuedAug 5, 2006
Last updated in NPPESNov 20, 2023
Certified by providerNov 20, 2023

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Nephrology Primary207RN0300X25MB02446200NJ
Internal Medicine207R00000X25MB02446200NJ

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Nov 10, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026No match—
New York OMIG · Nov 11, 2026No match—
Ohio Medicaid · Nov 11, 2026No match—
Pennsylvania Medicheck · Nov 11, 2026No match—
Washington HCA · Nov 11, 2026No match—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)Enrolled Practitioner - Internal Medicine (NJ)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients123
Services billed602 across 24 procedure codes
Paid by Medicare$57,816

Part D prescriptions in 2024

Prescriptions (claims)2,992 · 7,053 30-day fills
Patients194
Total drug cost$239,473
Generic share91% of claims

Medicare sources and data years

Education and affiliations

Graduation year1969
Medicare specialtyInternal Medicine
Secondary specialtiesNephrology

Medical group

Hospital affiliation

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$797.17 · 37 payments from 10 companies
  • 2024$911.61 · 36 payments from 8 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$797.17 · 37 payments

Receiving payments does not imply wrongdoing. What Open Payments covers ·original records

Other Internal Medicine, Nephrology providers in Northfield

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