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Kock-Yen Tsang, M.D.

NPI 1821149741ActiveIndividual· Internal Medicine, Cardiovascular Disease· Toms River, NJ

Internal Medicine, Cardiovascular Disease (M.D.) in Toms River, New Jersey, trained at Wayne State University School of Medicine (class of 1972). Their prescriptions cost Medicare Part D more than their services did: $595,440 for 4,632 claims, against $186,671 paid for services in 2024. Abbott Laboratories was the largest of 10 companies reporting payments in 2025, $991.96 in all, mostly food and beverage.

Overview

NPI1821149741
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorYes
NPI issuedJan 16, 2007
Last updated in NPPESMay 21, 2008

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Cardiovascular Disease Primary207RC0000X44667NJ

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 - Cardiovascular Disease (Cardiology) (NJ)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients523
Services billed2,111 across 27 procedure codes
Paid by Medicare$186,671

Part D prescriptions in 2024

Prescriptions (claims)4,632 · 8,288 30-day fills
Patients384
Total drug cost$595,440
Generic share86% of claims

Medicare sources and data years

Education and affiliations

Medical schoolWayne State University School of Medicine
Graduation year1972
Medicare specialtyCardiovascular Disease (Cardiology)

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$991.96 · 19 payments from 10 companies
  • 2024$1,055 · 32 payments from 13 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$991.96 · 19 payments

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

Other cardiologists in Toms River

All 39 cardiologists in Toms River · All cardiologists in New Jersey