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William T. Marshall, DO

NPI 1174533061ActiveIndividual· Surgery, Surgical Critical Care· Valhalla, NY

Surgery, Surgical Critical Care (DO) in Valhalla, New York, trained at New York College of Osteo Medicine of New York Institute of Technology (class of 1999). 158 Medicare patients in 2024, $36,524 paid; nearly all of their 61 Part D prescriptions were generic (93%). Organogenesis Inc. was the largest of 7 companies reporting payments in 2025, $485.80 in all, mostly food and beverage.

Overview

NPI1174533061
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorNo
NPI issuedAug 9, 2006
Last updated in NPPESJan 24, 2019

Specialties and licenses

TaxonomyCodeLicenseState
Surgery, Surgical Critical Care Primary2086S0102X296662NY
Surgery208600000X044420CT
Specialist174400000X044420CT

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 4, 2026No match—
New York OMIG · Nov 4, 2026No match—
Ohio Medicaid · Nov 4, 2026No match—
Pennsylvania Medicheck · Nov 4, 2026No match—
Washington HCA · Nov 4, 2026No match—

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

Medicare

Enrollment (PECOS)Enrolled Practitioner - General Practice (CT)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients158
Services billed424 across 74 procedure codes
Paid by Medicare$36,524

Part D prescriptions in 2024

Prescriptions (claims)61 · 61 30-day fills
Patients53
Total drug cost$758.78
Generic share93% of claims

Medicare sources and data years

Education and affiliations

Medical schoolNew York College of Osteo Medicine of New York Institute of Technology
Graduation year1999
Medicare specialtyGeneral Practice

Medical group

Hospital affiliations

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$485.80 · 10 payments from 7 companies
  • 2024$2,395 · 23 payments from 8 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$485.80 · 10 payments

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

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