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Alexander Hallac, MD

NPI 1386039998ActiveIndividual· Hospitalist· Greenwich, CT

Hospitalist (MD) with Northeast Medical Group Inc and 1 other group, practicing in Greenwich, Connecticut. Medicare paid $56,869 for services to 393 patients in 2024. Lists Greenwich Hospital Association - and 1 other hospital as hospital affiliations.

Overview

NPI1386039998
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorYes
NPI issuedMar 31, 2015
Last updated in NPPESJul 24, 2024
Certified by providerJul 24, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Hospitalist Primary208M00000X64929CT
Hospitalist208M00000X278916MA

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 - Hospitalist (CT); Practitioner - Hospitalist (MA); Practitioner - Internal Medicine (NY)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients393
Services billed407 across 6 procedure codes
Paid by Medicare$56,869

Medicare sources and data years

Education and affiliations

Graduation year2015
Medicare specialtyInternal Medicine

Medical groups

Hospital affiliations

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 hospitalists in Greenwich

All 15 hospitalists in Greenwich · All hospitalists in Connecticut