David Mason Siebert, - Medicare Family Practice in Seattle, WA

David Mason Siebert, is a medicare enrolled "Family Medicine" physician in Seattle, Washington. He went to University Of Chicago, Pritzker School Of Medicine and graduated in 2013 and has 11 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice The Association Of University Physicians and his current practice location is 3800 Montlake Blvd Ne, Seattle, Washington. You can reach out to his office (for appointments etc.) via phone at (206) 598-3294.

David Mason Siebert is licensed to practice in Washington (license number MD60584255) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1174866354.

Contact Information

David Mason Siebert,
3800 Montlake Blvd Ne,
Seattle, WA 98195-8021
(206) 598-3294
Not Available

Map and Direction




Physician's Profile

Full NameDavid Mason Siebert
GenderMale
SpecialityFamily Practice
Experience11 Years
Location3800 Montlake Blvd Ne, Seattle, Washington
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • David Mason Siebert attended and graduated from University Of Chicago, Pritzker School Of Medicine in 2013
  NPI Data:
  • NPI Number: 1174866354
  • Provider Enumeration Date: 04/05/2013
  • Last Update Date: 08/07/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 5294050837
  • Enrollment ID: I20170710001023

Medical Identifiers

Medical identifiers for David Mason Siebert such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1174866354NPI-NPPES
1174866354MedicaidWA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207QS0010XFamily Medicine - Sports Medicine MD60584255 (Washington)Secondary
207Q00000XFamily Medicine MD60584255 (Washington)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
University Of Washington Medical CtrSeattle, WAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Association Of University Physicians04461626973017

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. David Mason Siebert allows following entities to bill medicare on his behalf.
Entity NameThe Association Of University Physicians
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023041159
PECOS PAC ID: 0446162697
Enrollment ID: O20031105000244

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. David Mason Siebert is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
David Mason Siebert,
3800 Montlake Blvd Ne,
Seattle, WA 98195

Ph: (206) 598-3294
David Mason Siebert,
3800 Montlake Blvd Ne,
Seattle, WA 98195-8021

Ph: (206) 598-3294

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.