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Natalie Semenyuk, M.D.

NPI 1841232642ActiveIndividual· Obstetrics & Gynecology· East Setauket, NY

Obstetrics & Gynecology (M.D.) with Montefiore Medical Center, practicing in East Setauket, New York. Their prescriptions cost Medicare Part D more than their services did: $43,274 for 200 claims, against $12,642 paid for services in 2024. Lists Montefiore Medical Center as a hospital affiliation.

Overview

NPI1841232642
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedJun 13, 2006
Last updated in NPPESJul 13, 2026

Specialties and licenses

TaxonomyCodeLicenseState
Obstetrics & Gynecology Primary207V00000X230610NY

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 - Obstetrics/Gynecology (NY)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients73
Services billed164 across 22 procedure codes
Paid by Medicare$12,642

Part D prescriptions in 2024

Prescriptions (claims)200 · 274 30-day fills
Patients44
Total drug cost$43,274
Generic share89% of claims

Medicare sources and data years

Education and affiliations

Graduation year1988
Medicare specialtyObstetrics/Gynecology
TelehealthOffers telehealth

Medical group

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

Other OB-GYNs in East Setauket

All 17 OB-GYNs in East Setauket · All OB-GYNs in New York