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Christopher Walter Ryan, MD

NPI 1033127584ActiveIndividual· Internal Medicine, Medical Oncology· Portland, OR

Internal Medicine, Medical Oncology (MD) in Portland, Oregon, trained at State University of Ny Upstate Medical University (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $688,573 for 210 claims, against $23,904 paid for services in 2024. Exelixis Inc. was the largest of 5 companies reporting payments in 2025, $575.99 in all, mostly food and beverage.

Overview

NPI1033127584
StatusActive
Entity typeIndividual
CredentialMD
Sole proprietorNo
NPI issuedAug 3, 2006
Last updated in NPPESSep 18, 2017

Specialties and licenses

TaxonomyCodeLicenseState
Internal Medicine, Medical Oncology Primary207RX0202XMD24250OR

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 - Medical Oncology (OR)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients121
Services billed466 across 13 procedure codes
Paid by Medicare$23,904

Part D prescriptions in 2024

Prescriptions (claims)210 · 267 30-day fills
Patients58
Total drug cost$688,573
Generic share69% of claims

Medicare sources and data years

Education and affiliations

Medical schoolState University of Ny Upstate Medical University
Graduation year1994
Medicare specialtyMedical Oncology
TelehealthOffers telehealth

Medical group

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$575.99 · 5 payments from 5 companies
  • 2024$161.09 · 3 payments from 3 companies

Top paying companies in 2025

What the 2025 payments were for

  • Food and Beverage$550.29 · 4 payments
  • Education$25.70 · 1 payment

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

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