Mark W. Nelson, DDS MSD
Orthodontics and Dentofacial Orthopedics Dentistry · Sammamish, WA
Mark W. Nelson, DDS MSD is an orthodontics and dentofacial orthopedics dentistry with a practice address in Sammamish, Washington, and NPI 1427192020, issued on Feb 16, 2007. Check the license (Washington DE00008128, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark W. Nelson
- Credential
- DDS MSD
- Primary taxonomy
- Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
- License number
- DE00008128 WA
Self-reported in NPPES; status is on the state search - Practice location
- 336 228TH Ave NE, Sammamish, WA 98074
- Phone
- (425) 369-0366
- Enumerated
- Feb 16, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (425) 369-2966
- Entity
- Type 1 · individual
8 nearest orthodontics and dentofacial orthopedics dentistry records → All 377 in Washington → Look up another NPI →
Also registered at 336 228TH Ave NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Macinnes, DDSDentist1578662011
- Todd Steinhart, D.M.DOrthodontics and Dentofacial Orthopedics Dentistry1407045875
- Ryan Walker, DDSPediatric Dentistry1922270073
Verify Mark W. Nelson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license DE00008128Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $542.45
4 payments; by number, the most common kind was food and beverage; the largest payer was Align Technology, Inc. The 7,622 providers of this specialty with any payment received $1,641.73 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark W. Nelson among 377 orthodontics and dentofacial orthopedics dentistry records in Washington
Mark W. Nelson, DDS MSD is one of 377 orthodontics and dentofacial orthopedics dentistry records with a practice address in Washington. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 26% of them.
- NPI issued2007 · 26% of these records are older, 49% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2007 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223X0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 orthodontics and dentofacial orthopedics dentistry records list a practice address in Sammamish
They are 5 of the 398 NPPES records with a practice address in Sammamish, and 377 orthodontics and dentofacial orthopedics dentistry records in Washington.
All 377 in Washington → Every provider in Sammamish → Orthodontics and Dentofacial Orthopedics Dentistry nationwide →
The 8 orthodontics and dentofacial orthopedics dentistry records with the nearest ZIP codes
- Roozbeh Khosravi, DMD, PHDSammamish, WA 980741629433891
- Gregory Ogata, D.D.S., M.S.Sammamish, WA 980741639358336
- Todd Steinhart, D.M.DSammamish, WA 980741407045875
- Robert Trujillo, DMDSammamish, WA 980741548525660
- Tori Matthys, D.D.S., M.S.D.Woodinville, WA 980721336398395
- Michael Wagner, DMDWoodinville, WA 980721609903178
- Brandon Johnson, D.M.D., M.S.D.Snoqualmie, WA 980651972804573
- Jennifer Meader, DMDLynnwood, WA 980871548484645
Common questions
What is Mark W. Nelson, DDS MSD's NPI number?
Mark W. Nelson, DDS MSD's National Provider Identifier (NPI) is 1427192020, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark W. Nelson, DDS MSD located?
The NPPES record lists a practice address at 336 228TH Ave NE, Sammamish, WA, 98074. Phone: (425) 369-0366. Providers update this record themselves, so call before visiting.
How can I verify Mark W. Nelson, DDS MSD's license?
NPPES lists Washington license number DE00008128, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.