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James Nash, DO

NPI 1013323187ActiveIndividual· Internal Medicine· Marshfield, WI

Internal Medicine (DO) in Marshfield, Wisconsin, trained at Lake Erie College of Osteopathic Medicine, Erie (class of 2014). Their prescriptions cost Medicare Part D more than their services did: $1,118,549 for 10,991 claims, against $45,206 paid for services in 2024. E.R. Squibb & Sons, L.L.C. reported $14.75 in payments in 2025, mostly education.

Overview

NPI1013323187
StatusActive
Entity typeIndividual
CredentialDO
Sole proprietorNo
NPI issuedJul 9, 2014
Last updated in NPPESFeb 16, 2024
Certified by providerFeb 16, 2024

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine Primary207R00000X67684WI
Internal Medicine207R00000XR-10126IA

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 - Internal Medicine (WI)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients297
Services billed700 across 18 procedure codes
Paid by Medicare$45,206

Part D prescriptions in 2024

Prescriptions (claims)10,991 · 25,092 30-day fills
Patients1,184
Total drug cost$1,118,549
Generic share86% of claims

Medicare sources and data years

Education and affiliations

Medical schoolLake Erie College of Osteopathic Medicine, Erie
Graduation year2014
Medicare specialtyInternal Medicine
TelehealthOffers telehealth

Medical group

Hospital affiliations

Other facilities

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$14.75 · 1 payment from 1 company

Top paying companies in 2025

CompanyAmountPayments
E.R. Squibb & Sons, L.L.C.$14.751

What the 2025 payments were for

  • Education$14.75 · 1 payment

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

Other Internal Medicine providers in Marshfield

All Internal Medicine providers in Wisconsin →