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David Mason Siebert

NPI 1174866354ActiveIndividual· Family Medicine· Seattle, WA

Family Medicine in Seattle, Washington, trained at University of Chicago, Pritzker School of Medicine (class of 2013). In 2024 Medicare paid $18,790 for 113 patients, and Part D covered 251 of their prescriptions, 84% of them generic. Philips North America LLC reported $80.18 in payments in 2025, mostly food and beverage.

Overview

NPI1174866354
StatusActive
Entity typeIndividual
Sole proprietorNo
NPI issuedApr 5, 2013
Last updated in NPPESAug 7, 2020
Certified by providerAug 7, 2020

Specialties and licenses

TaxonomyCodeLicenseState
Family Medicine Primary207Q00000XMD60584255WA
Family Medicine, Sports Medicine207QS0010XMD60584255WA

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 - Family Practice (WA)
Accepts assignmentYes (participating)

Medicare services in 2024

Medicare patients113
Services billed330 across 16 procedure codes
Paid by Medicare$18,790

Part D prescriptions in 2024

Prescriptions (claims)251 · 430 30-day fills
Patients51
Total drug cost$17,365
Generic share84% of claims

Medicare sources and data years

Education and affiliations

Medical schoolUniversity of Chicago, Pritzker School of Medicine
Graduation year2013
Medicare specialtyFamily Practice

Medical groups

Hospital affiliation

Source: CMS Care Compare

Industry payments (Open Payments)

  • 2025$80.18 · 4 payments from 1 company

Top paying companies in 2025

CompanyAmountPayments
Philips North America LLC$80.184

What the 2025 payments were for

  • Food and Beverage$80.18 · 4 payments

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

Other family medicine physicians in Seattle

All 964 family medicine physicians in Seattle · All family medicine physicians in Washington