NPPES file of Aug 9, 2026

House Lee Mast Mcdonald And Nelson

House Lee Mast Mcdonald And Nelson holds 15 active organization NPIs in the federal registry, with practice locations in 10 Washington cities. Each location can bill under its own NPI.

CMS NPPES registry, file of Aug 9, 2026 · legal names grouped after punctuation and "LLC" are removed · method · Verify with CMS →

Which NPI is yours?

Search the organization with your city to find the NPI for the location you visit or bill.

Find a location's NPI

Renton has the most NPIs, 3

  1. Renton3
  2. Seattle3
  3. Sammamish2
  4. Bellevue1
  5. Issaquah1
  6. Mercer Island1
  7. Pasco1
  8. Snoqualmie1

Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.

Most NPIs were issued in 2008 and 2019

House Lee Mast Mcdonald And Nelson NPIs by year issued2008: 2, 2009: 2, 2010: 1, 2011: 0, 2012: 0, 2013: 1, 2014: 0, 2015: 0, 2016: 2, 2017: 0, 2018: 0, 2019: 3, 2020: 2, 2021: 2012320092011201320152017201920212008: 23211222
House Lee Mast Mcdonald And Nelson NPIs by year issued2008: 2, 2009: 2, 2010: 1, 2011: 0, 2012: 0, 2013: 1, 2014: 0, 2015: 0, 2016: 2, 2017: 0, 2018: 0, 2019: 3, 2020: 2, 2021: 201232008200920102011201220132014201520162017201820192020202123211222
House Lee Mast Mcdonald And Nelson NPIs by year issued2008: 2, 2009: 2, 2010: 1, 2011: 0, 2012: 0, 2013: 1, 2014: 0, 2015: 0, 2016: 2, 2017: 0, 2018: 0, 2019: 3, 2020: 2, 2021: 2012320092011201320152017201920212008: 2311222

Source: CMS NPPES, enumeration dates.

3 NPIs were issued in 2019 alone, more than in any other year; none in 6 of the years between.

Renton locations

The city with the most House Lee Mast Mcdonald And Nelson NPIs. The full list of all 15 follows.

NPILocationPrimary taxonomyIssued
1770826927451 DUVALL AVE NE SUITE 140, RentonPediatric DentistryApr 5, 2013
1861040800451 DUVALL AVE NE STE 230, RentonOrthodontics and Dentofacial Orthopedics DentistrySep 3, 2019
128521217514300 SE PETROVITSKY RD, RentonOrthodontics and Dentofacial Orthopedics DentistryMar 31, 2021
All 15 locations, by city
NPILocationPrimary taxonomyIssued
10636573932150 112TH AVE NE STE A, BellevueDentistDec 16, 2008
1831423292185 NE GILMAN BLVD, IssaquahPediatric DentistryOct 1, 2009
16993535993022 78TH AVE SE, Mercer IslandOrthodontics and Dentofacial Orthopedics DentistryMar 31, 2021
10333479509720 SANDIFUR PKWY, PascoPediatric DentistryJun 30, 2009
1770826927451 DUVALL AVE NE SUITE 140, RentonPediatric DentistryApr 5, 2013
1861040800451 DUVALL AVE NE STE 230, RentonOrthodontics and Dentofacial Orthopedics DentistrySep 3, 2019
128521217514300 SE PETROVITSKY RD, RentonOrthodontics and Dentofacial Orthopedics DentistryMar 31, 2021
154888798722603 NE INGLEWOOD HILL RD # 200, SammamishOrthodontics and Dentofacial Orthopedics DentistryJul 1, 2020
111453930122603 NE INGLEWOOD HILL RD STE 200, SammamishOrthodontics and Dentofacial Orthopedics DentistryAug 19, 2020
10234615974116 CALIFORNIA AVE SW APT 102, SeattleDental Clinic/CenterJul 19, 2016
18812418262617 CALIFORNIA AVE SW, SeattlePediatric DentistryAug 23, 2019
14175054542743 CALIFORNIA AVE SW UNIT 201, SeattleOrthodontics and Dentofacial Orthopedics DentistrySep 3, 2019
114446542834929 SE RIDGE ST SUITE 220, SnoqualmieDentistDec 15, 2008
1578882510411 STRANDER BLVD STE 102, TukwilaOrthodontics and Dentofacial Orthopedics DentistryMay 28, 2010
1740630342107 E CHERRY ST, Walla WallaPediatric DentistryJun 15, 2016

Checking an organization

  1. Match the NPI to the exact location you will visit or bill; each location can have its own.
  2. Confirm the business entity with the secretary of state.
  3. Check the HHS-OIG exclusion list for the organization and its owners.
  4. Verify each clinician you will see on their own record and with the state license search.

Common questions

Why does House Lee Mast Mcdonald And Nelson have 15 NPIs?

An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. House Lee Mast Mcdonald And Nelson's NPIs list practice locations in 10 cities.

Is an organization NPI a license?

No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.

Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.