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Leonidas Nikolaos Diamantopoulos, MD

NPI 1295358273ActiveIndividual· Nuclear Medicine· New York, NY

Nuclear Medicine (MD) in New York, New York, licensed in NY and MN, with an NPI issued in May 2020. Their prescriptions cost Medicare Part D more than their services did: $177,879 for 168 claims, against $33,025 paid for services in 2024. Lists Staten Island University Hospital as a hospital affiliation.

Overview

NPI1295358273
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedMay 25, 2020
Last updated in NPPESJun 24, 2026
Certified by providerJun 24, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Nuclear Medicine Primary207U00000X329062NY
Internal Medicine207R00000X329062NY
Internal Medicine, Hematology & Oncology207RH0003X73326MN

About license numbers in NPPES

Exclusion screening

ListResultDetails
HHS-OIG LEIE · Oct 9, 2026No matchChecked by NPI and by name + state
North Carolina Medicaid · Nov 10, 2026No match—
New York OMIG · Nov 10, 2026No match—
Ohio Medicaid · Nov 10, 2026No match—
Pennsylvania Medicheck · Nov 10, 2026No match—
Washington HCA · Nov 10, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - Hospitalist (NY)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients158
Services billed374 across 13 procedure codes
Paid by Medicare$33,025

Part D prescriptions in 2024

Prescriptions (claims)168 · 178 30-day fills
Patients63
Total drug cost$177,879
Generic share77% of claims

Medicare sources and data years

Education and affiliations

Graduation year2016
Medicare specialtyHospitalist
Secondary specialtiesInternal Medicine

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

None reported for 2025 or 2024.

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

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