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Allison Margold Ostroff, M.D.

NPI 1720262397ActiveIndividual· Internal Medicine· Greenwich, CT

Internal Medicine (M.D.) in Greenwich, Connecticut, trained at Albert Einstein College of Medicine of Yeshiva University (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $301,380 for 6,123 claims, against $65,097 paid for services in 2024.

Overview

NPI1720262397
StatusActive
Entity typeIndividual
CredentialM.D.
Sole proprietorNo
NPI issuedDec 19, 2007
Last updated in NPPESJan 10, 2017

Specialties and licenses

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 - Geriatric Medicine (CT)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients165
Services billed751 across 16 procedure codes
Paid by Medicare$65,097

Part D prescriptions in 2024

Prescriptions (claims)6,123 · 6,423 30-day fills
Patients258
Total drug cost$301,380
Generic share87% of claims

Medicare sources and data years

Education and affiliations

Medical schoolAlbert Einstein College of Medicine of Yeshiva University
Graduation year2005
Medicare specialtyGeriatric Medicine
Secondary specialtiesInternal Medicine

Medical group

Other facilities

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 Internal Medicine providers in Greenwich

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